Third Trimester

Week 36: Your Baby Weighs About 2.6kg

You may experience 'lightening' - the baby drops lower into the pelvis. This can relieve pressure on your diaphragm and make breathing easier, but increases pressure on your bladder and pelvis. 'Lightning crotch' (sharp, shooting pains in the pelvis) is common and harmless.

Your baby at week 36

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Size of a Head of romaine lettuce

Length: 47.4Weight: 2620
Week 1Week 36 of 40Week 40

Baby Development

The baby is shedding most of the lanugo and vernix that covered their skin. The baby is likely in the head-down position with their head engaged in the pelvis. The digestive system is fully developed but hasn't been activated yet as the baby gets all nutrition through the umbilical cord. The baby is practising breathing, blinking, gripping, and sucking in preparation for life outside the womb.

Week 36 Highlight: Your baby is shedding the lanugo and vernix, and their skin is becoming smooth and soft in preparation for birth!

Common Symptoms

Lightning crotch (sharp pelvic pain)
Pressure in the pelvis
Difficulty walking
Insomnia
Increased Braxton Hicks
Mucus plug may loosen

Tips for Week 36

1

If the baby has dropped (lightening), you may breathe more easily but need the toilet more.

2

Do not ignore regular, painful contractions - contact your healthcare provider.

3

Finalise all preparations for the baby's arrival.

4

Rest, rest, rest - your body is preparing for the marathon of labour.

South Africa Specific Info

Your GBS (Group B Streptococcus) swab is typically done this week in the private sector. This is a vaginal and rectal swab to check for bacteria that can be passed to the baby during birth. If positive, you will receive IV antibiotics during labour. In the public sector, risk-based management is more common. Your antenatal visits are now weekly.

All Pregnancy Weeks

1st Trimester 2nd Trimester 3rd Trimester

Frequently Asked Questions

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About the Author

Due Date Calculator SA Editorial Team

Our content is reviewed by healthcare professionals familiar with South African maternal health practices. We combine evidence-based medical information with local knowledge to support South African mums throughout their pregnancy journey. Our team includes contributors with backgrounds in midwifery, obstetrics, and maternal health education.

Last reviewed: February 2026