U2 and U3 might seem far off during pregnancy. For now, it's all about birth, hospital bag, postpartum period, baby clothes, breastfeeding or bottle-feeding, sleep, changing diapers, and settling in. And yet, it's worth thoughtfully and calmly considering your baby's first check-ups even before birth.
Not because you need to control everything. But because you can give yourself a little relief during the postpartum period.
Because after birth, many things are new. Your baby is here. You are tired. Maybe you are still in the hospital. Maybe you are already home. Maybe you are breastfeeding very frequently. Maybe you are recovering from a C-section. Maybe everything is wonderful and overwhelming at the same time.
Then it's a relief if you don't have to figure out with a newborn in your arms: When is the U2? Where do we do the U3? Do we already have a pediatrician? What do we need to bring? What questions can we ask? And what if our baby spits up, has a tummy ache, has a rash, doesn't drink well, or seems restless during diaper changes?
The most important guiding principle is: You don't have to understand everything medically. But you can prepare the first appointments so that they don't overwhelm you during the postpartum period.
In this article, you will find calm, practical, and non-dogmatic guidance: What are U2 and U3? What timeframes are important? What should you organize before birth? What documents do you need? How do breastfeeding, bottle-feeding, diaper changes, elimination communication, baby care, and postpartum questions fit into these appointments? And when should you not wait until the next check-up?
What are U-examinations?
U-examinations are early detection examinations for children. They serve to regularly monitor your child's health and development, identify possible abnormalities early, and advise parents.
The examinations begin directly after birth with the U1. This is followed by U2, U3, and further examinations in the first months and years of life.
kindergesundheit-info.de provides an overview of the early detection examinations U1 to U9. Further information can be found at kindergesundheit-info.de: Früherkennungsuntersuchungen U1 bis U9.
Particularly important for the first few weeks:
- U1: directly after birth
- U2: 3rd to 10th day of life
- U3: 4th to 5th week of life
U2 and U3, in particular, fall in the middle of a very intense period. That's why organization before birth is so helpful.
U1: Directly after birth
The U1 takes place directly after birth. It checks whether your baby has coped well with the birth and whether there are any abnormalities that require immediate treatment.
For you as an expectant mother, the most important thing is: The U1 is usually carried out where your baby is born — i.e., in a hospital, birth center, or, in the case of a home birth, by accompanying specialists.
The U1 primarily focuses on:
- breathing
- heartbeat
- skin color
- muscle tone
- reflexes
- externally recognizable abnormalities
- baby's first arrival
kindergesundheit-info.de describes the U1 as the initial examination directly after birth, where vital functions and immediately treatable conditions are primarily assessed. More information can be found at kindergesundheit-info.de: U1-Untersuchung.
U2: The first major head-to-toe examination
The U2 takes place between the 3rd and 10th day of life. For many babies, it is still done in the birthing clinic. If you go home early, have an outpatient birth, or a home birth, you must clarify beforehand where the U2 will take place.
This is one of the most important organizational points before birth. Not as a source of stress — but as loving preparation for a time when you shouldn't have to worry about every detail yourself.
The U2 can take place:
- in the birthing clinic
- in a pediatrician's practice
- depending on the situation, also through other medical care by arrangement
kindergesundheit-info.de describes the U2 as an examination between the 3rd and 10th day of life and points out that it often still takes place in the birthing clinic. More information can be found at kindergesundheit-info.de: U2-Untersuchung.
Why you should consider U2 before birth
After birth, the 3rd to 10th day of life arrives very quickly. If you then only start looking for a pediatrician's practice, it can become unnecessarily stressful.
Preparation is particularly important if:
- you want to have an outpatient birth
- you are planning a home birth
- you want to give birth in a birth center
- you are likely to go home early from the hospital
- you do not yet have a pediatrician's practice
- you live in a region with full pediatric care
- you may be less mobile after a C-section
A simple question before birth can create a lot of peace of mind: Who will do the U2 if we are no longer in the clinic?
U3: Usually the first appointment at the pediatrician's office
The U3 takes place in the 4th to 5th week of life. For many families, it is the first major examination at the pediatrician's office. Your baby will be physically examined again, and you can ask questions about nutrition, development, care, and daily life.
kindergesundheit-info.de describes the U3 as an examination in the 4th to 5th week of life, which is usually the first examination in the doctor's practice. More information can be found at kindergesundheit-info.de: U3-Untersuchung.
At U3, you can ask questions about:
- breastfeeding or bottle-feeding
- weight development
- spitting up
- tummy ache
- sleep
- baby care
- navel
- diaper rash
- diaper changing
- elimination communication and excretion
- vaccination counseling and next appointments
The U3 is therefore not just a medical check-up. It is also a good moment to bring your real postpartum questions.
The Yellow Booklet: What you should know
After birth, you will receive the child examination booklet, often called the "Yellow Booklet." The results of the U-examinations are documented in it.
You should take this booklet with you to every U-examination. It will accompany your child for years and contains important information about the examinations.
kindergesundheit-info.de describes the child examination booklet as the Yellow Booklet, in which the examination results from U1 to U9 are recorded. More information can be found at kindergesundheit-info.de: Das Gelbe Heft.
To bring to the appointment:
- Yellow Child Examination Booklet
- Your baby's health insurance card, if already available
- otherwise proof of insurance or documents by arrangement
- Vaccination card, if available
- Discharge letter from clinic or birth center
- Notes with questions
- Diaper changing supplies
- Change of clothes
kindergesundheit-info.de points out that the Yellow Child Examination Booklet, the child's health insurance card, and the vaccination card should be brought to the examinations.
Find a pediatrician's practice before birth
Finding a pediatrician's practice is easy in some regions. In others, it is difficult. Therefore, it makes sense not to wait until after birth.
This doesn't mean you have to plan everything perfectly. But a practice, a phone number, and a rough process provide a lot of security during the postpartum period.
Before birth, you can clarify:
- Does the practice accept newborns?
- Are U2 and U3 offered there?
- How early should you contact them?
- How does appointment scheduling work after birth?
- What happens if the baby arrives earlier or later?
- What documents should be brought?
- Are there urgent care appointments?
- How can the practice be reached for urgent questions?
It's best to save the phone number directly to your phone and also on your emergency numbers card.
More information on preparation can be found here: Baby First Aid Kit: What you really need before birth.
When should you schedule the U3?
Many parents schedule the U3 after birth, as soon as it is clear when the baby was born. Nevertheless, you can talk to the practice beforehand and ask how they handle it.
It is practical to:
- choose a practice before birth
- call promptly after birth
- state the date of birth
- note the U3 timeframe
- enter the appointment directly into the family calendar
- organize transportation and accompaniment
If you are still limited after a C-section or don't have transportation, clarify early on who can drive or accompany you.
What you can prepare during pregnancy
You don't have to organize everything completely. But you can prepare some things before birth so that you have less searching and deciding to do during the postpartum period.
Sensible before birth:
- choose a pediatrician's practice
- clarify where the U2 will take place
- ask how U3 appointment scheduling works
- create an emergency numbers card
- prepare a document folder
- pack a diaper bag for doctor's appointments
- create a list of questions on your phone
- inform your partner what to do
- consider transportation to the appointment
This preparation is not exaggerated. It is postpartum-friendly.
More on postpartum preparation can be found here: Preparing for Postpartum: What you can organize before birth.
Document folder for the postpartum period
A small folder or a sturdy binder can be very helpful. It holds all important documents related to birth, baby, and examinations.
In the folder can be:
- Maternity record
- Birth documents
- Discharge letter
- Yellow Booklet
- Vaccination card
- Insurance documents
- Pediatrician's contact information
- Midwife's contact information
- Emergency numbers
- Your own list of questions
After birth, you should not let the Yellow Booklet disappear somewhere in a bag. It is one of the most important documents for the next few years.
What questions you can bring to U2 or U3
During the postpartum period, questions often arise at inconvenient moments: at night while breastfeeding, during diaper changes, after spitting up, when your baby has a tummy ache, or when the bottom looks red.
Write these questions down directly. Otherwise, they are often forgotten by the time of the appointment.
Good questions for U2 or U3 can be:
- Is my baby drinking enough?
- Is the weight development appropriate?
- How many wet diapers are a good sign?
- Is this spitting up still normal?
- What can I do for a tummy ache?
- How does the navel look?
- What helps with diaper rash?
- Which care products are useful?
- How do I recognize fever in a newborn?
- When should we not wait?
- Which vaccinations or counseling appointments are next?
You are allowed to ask these questions. That's exactly what preventive care appointments are for.
Breastfeeding and U3: What you can discuss
If you are breastfeeding, U3 can be a good time to discuss questions about weight development, feeding behavior, cluster feeding, sore nipples, or uncertainty about starting breastfeeding.
Speak up if:
- breastfeeding causes severe pain
- your baby drinks very sleepily
- you are unsure if it's getting enough
- it drinks very frequently or for a very long time
- you have sore nipples
- your baby spits up a lot after feeding
- you are under significant emotional stress
More information can be found here: Cluster Feeding in the Postpartum Period, Milk Let-Down After Birth, and Sore Nipples in the Postpartum Period.
Bottle-feeding and U3: What you can ask
If your baby is bottle-feeding, you can ask questions at the appointment about feeding amount, preparation, spitting up, nipple size, breaks, and weight development.
Useful questions include:
- Is the feeding amount appropriate?
- How do I recognize satiety?
- Is frequent spitting up still within limits?
- What food is suitable for our baby?
- How should we react to constipation, diarrhea, or tummy ache?
- What to do if my baby drinks very hastily?
More information can be found here: Bottle-feeding in the Postpartum Period: Closeness, Security, and Without a Guilty Conscience.
Diapering, inserts, and skin at the pediatrician's appointment
Diapering provides a daily window into your baby's health. You see skin, navel, excretions, wet diapers, bowel movements, redness, diaper rash, and changes.
If you are unsure, mention it at the appointment. It is not "too small" or "too practical" for the pediatrician's office. Precisely these everyday observations are often important.
Note beforehand:
- How often is the insert or diaper wet?
- What do the bowel movements look like?
- Is there any redness?
- Is the bottom sore?
- Is the navel dry and unremarkable?
- Does your baby seem restless during excretion?
- Is there blood, mucus, or unusual colors?
More information can be found here: Diaper Rash in Babies, Umbilical Cord Care in Newborns, and Baby Care in the Postpartum Period.
Elimination Communication and U-examinations: Is it okay to discuss this?
Yes. If you are trying elimination communication or diaper-free, you may mention it to the pediatrician — especially if you have questions about excretions, skin, weight, feeding, or restlessness.
Diaper-free doesn't mean your baby can't wear a diaper. It means you perceive excretion as part of communication and offer your baby an opportunity at appropriate moments.
For example, you can say:
- "We sometimes do elimination communication during diaper changes."
- "Our baby wears an elimination communication diaper as a backup."
- "We pay attention to pee and poop signals."
- "We are interested in whether excretions and weight are well matched."
- "The bottom is less sore since we do elimination communication more often — is there anything we should watch out for?"
A good medical appointment doesn't have to be ideological. It's about observation, health, and everyday life.
If you want to learn more about elimination communication, you can start here: What does "diaper-free from birth" actually mean?.
If you want to know what you really need to get started, read on here: Elimination Communication Starter Kit: What you really need.
What you should pack for U2 or U3
A pediatrician appointment with a newborn doesn't require a lot of equipment. But a few things are practical, especially if you have to wait, your baby spits up, needs to be changed, or gets hungry.
In the bag can be:
- Yellow Booklet
- Insurance card or proof of insurance
- Discharge letter
- Vaccination record, if available
- Muslin cloth
- Changing pad
- Fresh diaper, backup, or elimination communication diaper
- Liners
- Spare bodysuit
- Wet bag or small laundry bag
- Bottle accessories, if your baby is bottle-fed
- Water and a snack for yourself
- List of questions
You can find more information here: Packing your diaper bag: What you really need on the go.
What clothing is practical for U2 and U3?
During U2 and U3, your baby will be examined. They will be undressed, weighed, moved, looked at, and dressed again. Therefore, clothing that is easy to put on and take off is important.
Practical options include:
- Wrap bodysuit
- Soft trousers
- Easily opened layers
- No complicated buttons on the back
- No overly tight clothing
- In cool weather, a warm, easily removable layer
- Elimination communication diaper or a backup that can be changed quickly
For pediatrician appointments, the most practical outfit is more important than the prettiest. Soft, natural materials and simple cuts can make this moment significantly more relaxed.
You can find more information here: Wrap bodysuit or slip-on bodysuit: Which is better? and here: What clothing does a newborn really need?.
U3 after a C-section: Organization is key
After a C-section, the U3 appointment can be physically demanding for the mother. Getting dressed, packing the bag, car ride, car seat, waiting room, undressing, changing diapers, going back home – it's a lot when your abdomen is still healing.
Helpful after a C-section:
- Partner or accompanying person drives
- Pack the bag the day before
- Avoid carrying the baby unnecessarily heavy
- Don't carry the car seat yourself for long
- Choose an appointment time that is as stress-free as possible
- Plan for rest after the appointment
- Prepare a list of questions so nothing is forgotten
You can find more information here: Postpartum after C-section: What really helps you.
Bringing siblings to U3?
If there's an older child, the question arises: Bring them along or arrange childcare? Both can work. But U3 is often calmer if you can focus on the baby and your questions.
Consider in advance:
- Can the sibling be looked after?
- Is a second adult coming along?
- How long is the waiting time approximately?
- Is the older child currently sick?
- Can you concentrate on the doctor's consultation and the baby with a sibling present?
If you bring the older child, pack snacks, water, and a quiet activity. If possible, bring a second adult.
You can find more information here: Postpartum with a sibling: What really helps you.
The partner at U2 and U3
The partner should not only be a driver during the first examinations. They can think along, ask questions, hold the baby, change diapers, organize documents, and note down important information.
The partner can:
- Help organize appointments
- Clarify the U2 location
- Arrange the U3 appointment
- Pack the bag
- Bring the yellow booklet
- Undress and dress the baby at the appointment
- Change diapers or hold the baby for elimination
- Keep a list of questions
- Note down answers
- Protect quiet time at home after the appointment
This is not just peripheral help. This is active parenthood.
You can find more information here: Partner in the postpartum period: What really helps after birth.
What you shouldn't postpone until U2 or U3
U-examinations are important. But they do not replace acute medical clarification. If your baby seems unwell, you shouldn't think: "We have U3 soon anyway."
Please seek professional advice beforehand if your baby:
- Has a fever
- Feeds poorly or weakly
- Has few wet diapers
- Appears unusually drowsy or listless
- Breathes heavily or with effort
- Repeatedly or projectile vomits
- Cries persistently in a high-pitched or inconsolable way
- Appears pale, bluish, or unusually discolored
- Has a severely red, weeping, or foul-smelling navel
- Has blood in their stool or urine
- You have a strong uneasy feeling
You can find more information on preparing for such situations here: Baby first aid kit: What you really need before birth.
How to collect questions during the postpartum period
During the postpartum period, it's easy to forget questions. Not because they're unimportant, but because lack of sleep, hormones, breastfeeding, feeding, and everyday life overshadow everything.
Practical tips:
- Create a note on your phone
- Write down questions immediately
- Take photos of skin areas if they look different later
- Briefly note down observations about feeding or diaper changes if they concern you
- Partner adds their own questions
- Open the list during the appointment and go through it point by point
You don't have to know everything by heart. A list is not a sign of uncertainty, but of clarity.
U2 and U3 as part of a calm postpartum period
The initial examinations are important. But they shouldn't dominate your postpartum period. You can prepare for them so they take up less space.
Postpartum-friendly tips:
- Find a pediatrician before birth
- Know the U2 location
- Schedule the U3 appointment promptly
- Keep the bag prepared
- Organize accompaniment
- Don't plan visits after appointments
- Plan for rest, food, and closeness afterward
You can find more about settling in here: The first days at home with baby.
A simple preparation checklist for U2 and U3
Before birth
- Find a pediatrician's office
- Clarify if the practice accepts newborns
- Ask if U2 is possible there, if you are home early
- Inquire about the U3 appointment process
- Create an emergency numbers card
- Prepare a document folder
- Have a basic diaper bag ready
- Inform your partner
After birth
- Keep the yellow booklet safe
- Clarify if U2 will be done at the clinic
- Ensure a U2 appointment if discharged early
- Schedule the U3 appointment
- Start a list of questions
- Collect discharge letter and documents
Before the appointment
- Pack the yellow booklet
- Pack insurance card or documents
- Pack the discharge letter
- Bring vaccination record, if available
- Open the list of questions
- Pack a changing pad
- Pack an elimination communication diaper, backup, or regular diaper
- Pack liners
- Pack a spare bodysuit
- Pack a muslin cloth
During the appointment
- Ask questions
- Discuss breastfeeding or bottle-feeding
- Discuss spitting up, stomach aches, or sleep
- Show the navel and skin if you are unsure
- Ask questions about diaper changes and excretions
- Note down the next appointment
- Ask when you should call urgently
Frequent questions: Preparing for U2 and U3
When does U2 take place?
U2 takes place between the 3rd and 10th day of life. It is often done in the birthing clinic. If you go home early or give birth ambulatorily or out-of-hospital, you should clarify beforehand where U2 will take place.
When does U3 take place?
U3 takes place in the 4th to 5th week of life. For many families, it is the first major appointment at the pediatrician's office.
Do I need to have a pediatrician's office before birth?
It is very sensible. Especially if practices are full or you plan an outpatient birth, you should clarify before birth which practice will accept your baby and how U2 or U3 will be organized.
What do I need to bring to U3?
Yellow booklet, health insurance card or insurance documents, discharge letter, vaccination record if available, list of questions, changing pad, diaper or elimination communication diaper, liners, muslin cloth, and a change of clothes.
What is the yellow booklet?
The yellow booklet is the child's examination booklet. The results of the U-examinations are documented in it. You receive it after birth and should take it to all U-examinations.
Can I ask the pediatrician questions about elimination communication?
Yes. You can say that you practice elimination communication during diaper changes or after waking up and use an elimination communication diaper as a backup. Questions about excretions, skin, weight, and feeding behavior are particularly well-suited for the appointment.
What should I do if my baby seems sick before U3?
Then you should not wait until U3. If your baby has a fever, poor feeding, unusual drowsiness, few wet diapers, breathing problems, projectile vomiting, or you have an uneasy feeling, you should seek professional advice.
Can the partner come to U2 or U3?
Yes, and it is often very helpful. The partner can organize documents, hold the baby, change diapers, ask questions, note down answers, and relieve the mother physically.
What clothing is practical for U2 and U3?
Practical clothing is easy to put on and take off: for example, a wrap bodysuit, soft trousers, easily opened layers, and a backup or elimination communication diaper that can be changed without complications.
A calm thought to conclude
U2 and U3 are not tests for parents. You don't have to show that you know everything there. You are allowed to ask questions.
You are allowed to say: I'm not sure if my baby is drinking enough. I don't know if this spitting up is normal. The navel looks strange. The bottom is sore. Our baby cries a lot. We sometimes practice elimination communication — what should we pay attention to?
Good preparation does not mean you control everything. It means you have to search less during the postpartum period.
Clarify pediatrician's office. Know the U2 location. Schedule the U3 appointment. Keep the yellow booklet safe. Note down questions. Pack the bag simply. Involve your partner. Plan for rest after the appointment.
This way, U2 and U3 will not become additional pressure.
But rather what they should be: Guidance for your baby — and orientation for you as a family.
This perfectly aligns with Mata Origin's philosophy: starting the baby year naturally does not mean avoiding medical support or knowing everything on your own. It means accompanying your baby attentively, lovingly, and with good support — with calmness, clarity, suitable materials, and the confidence to seek help when uncertain.
If you want to accompany your baby in the postpartum period with soft materials, practical cuts, and a relaxed approach to diapering, elimination communication, and care, you will find thoughtful companions for this initial time at Mata Origin.
Discover suitable products for postpartum, diapering, and elimination communication: Elimination communication diapers, Diaper liners, Elimination communication pants, and the On-the-go changing mat.
Note: This article does not replace medical, midwifery, or pediatric advice. It is intended to provide guidance. The exact examination contents, appointments, and recommendations may vary in individual cases. Please clarify U2, U3, preventive care, vaccination advice, breastfeeding or feeding questions, weight development, fever, feeding problems, unusual skin, navel changes, or other health concerns with your midwife, pediatrician, or general practitioner. In case of fever, poor feeding, unusual drowsiness, breathing problems, few wet diapers, poor general condition, or acute severe symptoms, seek immediate medical help.
