When is my baby due, and what happens before the birth?

Who is this for?

Parents-to-be in Singapore, from a positive test to the last weeks. The timings are the typical ones from HealthHub, KKH and NUH. Your doctor or midwife sets your actual schedule, so bring the dates to your next visit.

How do you work out your due date?

1. Note the first day of your last period and your usual cycle. The tool takes cycles of 21 to 45 days.
2. Add 280 days, plus one day for each day your cycle is longer than 28 days (or minus one for each day shorter).
3. Know the conception or IVF transfer date? The tool counts 266 days from conception, 263 from a day-3 transfer and 261 from a day-5 transfer.
4. After the dating scan, usually in weeks 8 to 12, use your doctor’s due date. The tool also works from a scan date.
5. Note each screen’s window. Tell your employer about maternity leave at least 4 weeks before it starts.
6. After the birth, register it on LifeSG within 42 days. Apply for the Baby Bonus or the SG Child Support Package in the same flow.

Which check-ups and screens happen when?

Weeks count from the first day of your last period, so your due date is week 40.

First antenatal visit and dating scan

Weeks 8 to 12

Routine first blood tests

Weeks 6 to 12

First trimester screening (optional)

Weeks 11 to 14

Detailed (anomaly) scan

Weeks 18 to 22

Gestational diabetes screen (OGTT)

Weeks 24 to 28

Check-ups every two weeks

Weeks 28 to 34

Growth scan

Weeks 28 to 32

Group B Strep swab

Weeks 35 to 37

Full term

Weeks 37 to 40

Source: SingHealth — Your Pregnancy Journey in KKH ↗ (opens in new tab) · Data period: typical clinical timings, not rules with a start date · Last checked: 10 October 2026

At polyclinics, check-ups are every four weeks until week 28, then every two weeks. From about week 34 you move to the hospital, earlier for some mothers. Screens such as the first trimester screen are optional: ask your doctor.

What does this look like for a due date of 7 April 2027?

A last period on 1 July 2026 and a 28-day cycle give:

Due date

7 April 2027

Detailed (anomaly) scan window

4 November 2026 to 8 December 2026

Gestational diabetes screen window

16 December 2026 to 19 January 2027

Group B Strep swab window

3 March 2027 to 23 March 2027

Tell your employer about maternity leave by

10 February 2027

Earliest maternity leave start

10 March 2027

Register the birth by, if baby comes on the due date

19 May 2027

A 32-day cycle moves the due date 4 days later, to 11 April 2027.

This due date is close to 1 April 2027. A baby born up to 31 March 2027 gets the Baby Bonus Scheme; born on or after 1 April 2027, the SG Child Support Package. The tool flags due dates within 4 weeks of the change.

When can leave start, and which support applies?

Maternity leave is 16 weeks. By default it starts 4 weeks before the birth; by agreement, any day in those 4 weeks. Give 4 weeks’ notice. The first 8 weeks are one block; the last 8 can be taken flexibly within 12 months.

Paternity leave is 4 weeks, by default as one block within 16 weeks of the birth, or by agreement within 12 months. Shared Parental Leave is 10 weeks from 1 April 2026, 5 each by default. Split it with the Parental leave planner.

Source: MOM — Shared parental leave ↗ (opens in new tab) · Data period: rules in force from 1 April 2026 · Last checked: 10 October 2026

The SG Child Support Package includes a S$10,000 Baby Gift and a S$5,000 First Step Grant. How much will the Baby Bonus and CDA give my baby? has the full amounts.

Which tool and download help?

The Due date and antenatal timeline keeps your due date on this phone. The Confinement countdown checklist and Baby Bonus + CDA maximiser can fill it in. Print the Hospital bag and admission list for the last weeks and the First 42 days newborn calendar for after the birth.

What does this timeline not tell you?

It is a planning aid. Your doctor may suggest other tests or timings, such as earlier diabetes screening at higher risk. Pregnancy normally lasts 37 to 42 weeks, so the due date is the middle of a window.

The conception and IVF figures are the clinical convention; we found no official page stating them on 10 October 2026. Confirm with your fertility clinic. Keep your baby’s Child Health Booklet for every check-up. If anything feels wrong, discuss it with your doctor straight away.