Week 27 opens the third trimester and usually coincides with a vaccination decision and planning an ultrasound. It is a good moment to prepare for the visit where you discuss these topics and to start noting your preferences for birth. You do not have to decide anything now — just gather the material.
What to do in week 27
- Prepare your pregnancy notes, results and question list for the next visit.
- Ask how the third-trimester ultrasound is booked.
- Find out where and when you can get the vaccination.
- Write the first points of your birth plan.
- Put the coming appointments in your calendar.
What to bring and prepare for the visit
A third-trimester visit is usually longer than earlier ones, because it includes measuring your belly, discussing results and talking about birth. It is worth arriving with your pregnancy notes, results and a list of questions. If you are planning a vaccination, ask how it is arranged and whether it needs a separate booking. The same goes for the ultrasound — find out where it is done and how to book. If the date falls in a week when you have other appointments, move it so they do not pile up on one day.
- Your pregnancy notes and a complete set of recent results.
- A list of the medications you take and questions since your last visit.
- A note on how your baby is moving and whether anything worries you.
- Your calendar, so you can book the next dates right away.
- Ask who issues the ultrasound referral and when.
- Check whether the facility sends a reminder about the date.
How to plan the ultrasound and vaccination
The third-trimester ultrasound and the vaccination are two things worth putting in your calendar early, because slots fill up. Ask whether the scan is done by the facility managing your pregnancy or a separate clinic, and whether you need to book it. For the vaccination, find out where it is given and which documents to bring. Write the answers down so you do not have to recall them next time. Take notes to the visit in a form that is easy to read — a few bullet points instead of a long text.
First steps toward a birth plan
It is best to start a birth plan with loose notes rather than a finished document. Write down what matters to you: contact with your baby after birth, having a loved one present, how you want to cope with pain. These points will become a conversation with your midwife. Return to the notes after every visit and add what has changed — a plan is a living document.
Tip
Keep your birth notes together with your questions for the doctor — then it is harder to forget something at the visit.
The rhythm of check-ups — what repeats and why
In the third trimester visits usually become more frequent, and a fixed part of them is talking about how you feel, measuring your belly and reviewing results. Some facilities do CTG then, others invite you for extra consultations. It is worth knowing which tests repeat, why they are done and when to expect a result. That way at a visit you ask about what is on your mind instead of just collecting referrals. If something in your care plan changes, ask for an explanation right away — it is then easier to arrange the coming weeks and plan work and rest.
- Note which tests repeat in the coming weeks.
- Ask why each of them is done.
- Bring results in date order.
- Note what staff say about the rest of the care plan.
- Add questions right after the visit while you still remember.
Your birth partner — first arrangements
It is worth deciding about your birth partner calmly, before any rush appears. Settle who you want beside you, whether the facility sets any conditions and what that person should know. Ask what the journey looks like at different times of day and whether you can count on help if something changes. Think about a backup plan too: who will drive you to the facility if the first person is unavailable, and who will answer the phone at night.
- Ask the facility whether having a birth partner requires any formalities.
- Settle who will drive you to hospital and by which route.
- Plan a backup in case that person is unavailable.
- Note who will inform the family.
- Tell your birth partner where you keep your documents.
When to contact a doctor
- • Contractions that intensify and do not pass require contacting the facility.
- • Weaker or different baby movements are a signal to call your midwife or the admission ward.
- • In a life-threatening situation, call 112.
When to call a doctor or midwife
- • Contractions that intensify and do not let up.
- • A change in your baby's movements or a feeling that there are fewer.
- • A headache, visual disturbances or marked swelling.
In a life-threatening situation call 112 or go to the nearest maternity hospital admission room — do not wait for a follow-up appointment.
Week 27 in detail
Week 27: how your baby is growing — Lettuce
Week twenty-seven opens the third trimester! Your baby is about the size of a head of lettuce (around 375 mm). The brain is highly active — sleep and wake cycles are emerging. The lungs are nearly mature but still need a few more weeks.
Development at week 27
- Brain: sleep and wake cycles.
- Lungs nearly mature.
- Memory and responses are developing.
Tip
Midwife's tip: welcome to the third trimester — the home stretch. You may already be able to sense your baby's sleep and wake rhythm.
Sources
- NHS — You and your baby at 27 weeks — www.nhs.uk/pregnancy/week-by-week/13-to-27-weeks/27-weeks-pregnant/
- Mayo Clinic — Pregnancy week by week — www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week
Week 27: tests and symptoms — third-trimester ultrasound (weeks 28–32)
Week twenty-seven marks the start of the third trimester. You tire faster because your body is running at high revs. It's also time to plan the third-trimester ultrasound (weeks 28–32) and the whooping cough vaccine (weeks 27–36).
Whooping cough vaccination (dTap)
- Recommended for every pregnancy, ideally weeks 27–36.
- Passes antibodies to your baby through the placenta.
- Protects the newborn in the first months of life.
Third-trimester ultrasound
- Assesses fetal growth and weight.
- Checks placenta position and amniotic fluid levels.
- Done between weeks 28 and 32.
Tip
Midwife's tip: talk to your doctor about the dTap vaccine — it's one of the most important steps you can take to protect your newborn.
Sources
- Polish Ministry of Health — vaccination in pregnancy — www.gov.pl/web/zdrowie
- NHS — Whooping cough vaccination in pregnancy — www.nhs.uk/pregnancy/keeping-well/whooping-cough-vaccination/
Week 27: Third trimester begins — what you can do today
Welcome to the third trimester — the home stretch! It's a good moment to pack your hospital bag. There's no need to do it in a panic — the checklist in the app will walk you through it step by step.
Your tasks for this week
- Start packing your hospital bag.
- Book your whooping cough vaccine (weeks 27–36).
- Plan your third-trimester ultrasound.
Hospital bag — the essentials
- Documents: ID, maternity notes.
- Toiletries, a comfortable gown, slippers.
- Things for the baby: bodysuits, a blanket, diapers.
Tip
Midwife's tip: don't leave packing until the last minute. In the third trimester, a calm head is the best preparation.
Sources
- Polish Ministry of Health — perinatal care standard — www.gov.pl/web/zdrowie/standard-organizacyjny-opieki-okoloporodowej
Related guides
- Oral Glucose Tolerance Test (OGTT) — how to prepare and what comes next
The OGTT is a screening test for gestational diabetes performed in the second trimester. We show what the test day looks like step by step, what to bring, how to read the laboratory report, and what the further care pathway looks like in Poland.
- Gestational diabetes — what the diagnosis means and what happens next
An abnormal test result between weeks 24 and 28 can come as a surprise, because gestational diabetes usually causes no symptoms. This guide explains why the test is done, what the care pathway looks like in the Polish system, and what to ask at your appointment.
Medical disclaimer
This article is educational in nature and does not replace advice from a doctor, midwife or other specialist. If in doubt, contact your attending physician.
This week is awaiting medical review: the page is not indexed and carries no ads until the content has been verified by a medically qualified person.
Sources
We base our content on these documents. Every medical claim in the guide is reflected in one of the publications below.
- Ministry of Health — "Organizational standards of perinatal care" (regulation) — dziennikmz.mz.gov.pl
- NHS — "Whooping cough vaccination in pregnancy" — www.nhs.uk/pregnancy/keeping-well/whooping-cough-vaccination/
- NHS — "Antenatal (pregnancy) care and appointments" — www.nhs.uk/pregnancy/your-pregnancy-care/your-antenatal-care-and-appointments/
- NICE — "Antenatal care" (NG201) — www.nice.org.uk/guidance/ng201
- NHS — You and your baby at 27 weeks — www.nhs.uk/pregnancy/week-by-week/13-to-27-weeks/27-weeks-pregnant/
- Mayo Clinic — Pregnancy week by week — www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week
- Polish Ministry of Health — vaccination in pregnancy — www.gov.pl/web/zdrowie
- Polish Ministry of Health — perinatal care standard — www.gov.pl/web/zdrowie/standard-organizacyjny-opieki-okoloporodowej