<p>Being 33 weeks pregnant means you are between 33+0 and 33+6 weeks. About 7 months and 18 days have passed since your last period, so you are in the 8th month. This is a good time to pack your hospital bag and plan for the big day; the NHS points out that only 1 in 20 babies arrive on their due date.</p>
<p>At 33 weeks, about 7 months and 18 days have passed since your last period, so you are in the 8th month. Weeks are counted from the first day of your last period (days 231–237).</p>
According to the NHS, your baby is about 43.7 cm from head to heel. The NHS says the brain and nervous system are now fully developed; ACOG notes that the brain and nervous system are still finishing their development at 37–40 weeks. The bones are hardening, except the skull bones, which stay soft and separated until your baby is around 12 to 18 months old. This flexibility makes the journey through the birth canal a little easier.
The NHS says it is no surprise to feel really tired now, since you are carrying a couple of extra kilograms. You may feel heaviness or pressure in your pelvis; according to the NHS this can be a sign that your baby is head down and ready for birth.
Your womb may start preparing for birth with Braxton Hicks contractions: your bump tightens for 20 to 30 seconds and then relaxes. These should not hurt.
Hospital bag: the NHS says only 1 in 20 babies arrive on their due date, so it makes sense to pack your bag now. Its list includes your birth plan and notes, baby clothes and nappies, something loose to wear in labour, spare underwear, nightclothes, nursing bras and breast pads, super-absorbent pads, a wash bag and towels, healthy snacks and any medicines. Keep the numbers for your hospital, your birth partner and whoever will drive you saved in your phone.
Turkish Ministry of Health (antenatal care guideline, 2026): week 33 falls between the 3rd visit (28–32 weeks) and the 4th visit (36–38 weeks). Weekly blood pressure checks are advised, and seeing a doctor if it is above 130/80 mmHg. The guideline gives Tdap at 18–24 weeks and allows it until the end of week 32 if that window was missed; the NHS says the whooping cough vaccine can be given later but your baby may get less protection, and UpToDate gives 27 to 36 weeks as the ideal window. If you missed it, talk to your doctor.
NICE NG201: the next appointment is at 34 weeks. US (UpToDate, 2026): visits are every 2 weeks from 28 to 36 weeks.
Group B strep (GBS) testing — approaches differ: in the US (UpToDate) all pregnant women are screened between 36+0 and 37+6 weeks with swabs from the lower vagina and rectum; ACOG's patient information says the test is done between 36 and 38 weeks. The Turkish Ministry of Health guideline does not include GBS screening in its visit steps. NICE NG201 lists GBS among infections to give information about, and its schedule has no routine GBS test. The NHS notes that up to 2 in 5 people carry GBS and that most GBS infections in newborns are preventable.
| Symptom | Usually | Seek care if |
|---|---|---|
| Heaviness and pressure in the pelvis | This can be a sign your baby is settling head down (NHS). | If the pressure comes with regular contractions, period-like cramps, low backache, leaking fluid or spotting, it may be preterm labour (UpToDate). |
| Bump tightening | Painless tightening for 20 to 30 seconds is a Braxton Hicks contraction (NHS). | If it becomes painful or regular, call your maternity unit (NHS). |
| Extreme tiredness | Common at this stage; the NHS suggests resting during the day. | Feeling too unwell to manage daily activities is one of the Turkish Ministry of Health danger signs. |
Most of these are danger signs or emergency referral criteria in the Turkish Ministry of Health guideline; call your maternity unit or go to the nearest emergency department without waiting. The NHS says to call straight away, even in the middle of the night, if your baby's movements reduce, stop or change pattern, without waiting until the next day. NICE asks for hospital assessment within 24 hours if blood pressure is 140/90 mmHg or above and the same day at 160/110 mmHg or above; it recommends a hospital review for any unexplained bleeding after 13 weeks, and anti-D for women who are RhD negative and at risk of isoimmunisation.
About 7 months and 18 days have passed since your last period, so you are in the 8th month.
According to the 2017 WHO fetal growth charts, the 50th percentile for estimated weight at 33 weeks is 2,103 g, and the 10th to 90th percentile range is 1,807–2,419 g. According to the NHS, the baby is about 43.7 cm from head to heel. The WHO values come from ultrasound measurements in low-risk pregnancies in ten countries; the authors note differences by country, maternal factors and fetal sex, and that birth weight varies considerably even under optimal conditions. Your own baby's estimated weight is measured on ultrasound and has a margin of error (UpToDate, 2026).
The NHS suggests packing it at 33 weeks, because your baby might come early and only 1 in 20 babies arrive on their due date. See our hospital bag guide for a full list.
In the US (UpToDate) it is done between 36+0 and 37+6 weeks with a vaginal and rectal swab. The Turkish Ministry of Health visit steps and the NICE schedule do not include a routine GBS test. Ask your doctor whether it is planned for you.
Usually not. According to ACOG and the NHS, only about 1 in 20 babies are born on their due date. The date is used to time tests and track your baby's growth.
Last updated: . All sources have been confirmed with their latest versions. This content is for educational purposes and is not a substitute for a doctor's examination.