At a glance
Week 28: 12 weeks to go. This week: Growth scan, weeks 28 to 32.
- Trimester 3
- 12 weeks to go
- Baby about 37.6cm
Check-ups and screens
Gestational diabetes screen (OGTT) now · weeks 24 to 28
A glucose tolerance blood test for every expectant mother, with an anaemia check. Higher-risk mothers are usually screened earlier as well.
Growth scan now · weeks 28 to 32
A third-trimester scan of the baby's growth, offered by KKH at weeks 28 to 32 and by NUH at week 32.
Check-ups every two weeks now · weeks 28 to 34
At polyclinics, check-ups are every four weeks before week 28 and every two weeks after. From about week 34 you are transferred to the hospital for follow-up (earlier for some mothers).
Coming up from week 35: group B Strep swab, weeks 35 to 37.
Typical windows from HealthHub, KKH and NUH. Your doctor decides your own schedule.
When to get help
Baby moving less than usual? HealthHub says: “If you feel that your baby is moving less than usual, monitor your baby’s movement for a while. If you are worried, see your doctor or go to the hospital immediately.”
HealthHub’s signs to act on, from 25 to 37 weeks:
See your doctor
- Headache and swelling of limbs: if these are severe or associated with dizziness, vomiting, blurred vision or upper abdominal pain
Go to the hospital as soon as possible
- Abdominal pain: regular, painful and persistent uterine contractions or tightening of the abdomen
Go to the hospital immediately
- Vaginal bleeding: bright red bleeding (like menses), or blood-stained mucus with painful contractions
- Reduced foetal movement
- Leaking of water: a continuous flow or a sudden gush of clear fluid from the vagina
How big is your baby?
About 37.6cm long, head to heel. NHS compares it to an aubergine.
Leave and Baby Bonus
Coming up from week 30: tell your employer about maternity leave. Give at least 4 weeks' notice before your leave starts. For leave from week 36, the default start, tell them by week 32.
Which baby scheme applies follows the actual birth date. Born before 1 April 2027: the Baby Bonus Scheme. Born on or after it: the SG Child Support Package.
Plan ahead
- Due date and antenatal timeline: every window and leave date on your own calendar.
- When is my baby due, and what happens before the birth?
- Confinement countdown checklist: a printable list.