Pregnancy Week 9
Your baby is the size of a Grape - 2.3 cm, 2 g
Your Baby at Week 9
Development highlights
- All external body structures are in place
- Muscles are starting to work - Your baby makes tiny involuntary movements
- Eyes are fully formed but fused shut - They open around week 26
- The placenta is almost fully formed and takes over hormone production
Source: WHO Child Growth Standards; embryology references from Moore & Persaud.
Your Body in Week 9
The first trimester is driven by rapidly rising hCG and progesterone. These hormones are essential for maintaining the pregnancy but cause most of the symptoms you're feeling. They typically peak around weeks 8–10 and start easing toward the end of week 12. Read more in the First Trimester Guide →
Common symptoms this week
Week 9 Checklist
- Book your Nuchal Translucency (NT) scan for weeks 11–13
- Consider NIPT (Harmony, Panorama, or Verisei test) if opting for early chromosomal screening
- Begin researching antenatal classes - They fill up months in advance
- Gentle swimming or prenatal yoga can improve mood and reduce fatigue
Iodine is crucial for thyroid function and fetal brain development. Deficiency is common in Singapore. Sea fish, dairy, eggs, and iodised salt are key sources.
Book via HealthHub app, your hospital's antenatal clinic, or your private OB. Bring your referral letter and NRIC.
Baby's Body Systems Development
How far along each major system is at week 9. Development is continuous - The chart shows when each system is actively forming and when it reaches maturity.
First Trimester: Key Milestones & Screenings
The first trimester is the most critical period for fetal development. All major organs form between weeks 3–13. Most miscarriages (about 80%) also occur in this period - This is why many couples wait until week 12 to announce. Key screening tests are done now to establish your due date and check for chromosomal conditions.
Confirms gestational age and heartbeat. Performed at KKH, NUH, or your private OB.
Learn more →Nuchal Translucency screening for chromosomal conditions. Pairs with blood test.
Learn more →Non-invasive prenatal test - More sensitive than OSCAR. Blood test, not covered by Medisave.
Learn more →Week-by-week: what forms when
| Weeks | Key development | Action |
|---|---|---|
| Wk 1–2 | Fertilisation, implantation, hCG begins | Start folic acid 400–800 mcg daily |
| Wk 3–4 | Neural tube closes, heart begins beating | Book first antenatal appointment |
| Wk 5–6 | Brain, limbs, facial features form | Dating scan booking, NIPT discussion |
| Wk 7–8 | All organs present, embryo becomes fetus | Dating scan - Hear the heartbeat |
| Wk 9–10 | Kidneys produce urine, bones begin | Book NT scan for 11–13 weeks |
| Wk 11–13 | NT scan, fingerprints form, sex organs | NT/OSCAR screening, baby bonus registration |
Frequently Asked Questions - Week 9
Yes - Many women have very few or no obvious symptoms in the first weeks. The absence of nausea, sore breasts, or fatigue doesn't mean anything is wrong. Every pregnancy is different. Symptoms typically appear between weeks 5–8 as hCG levels rise. If you're concerned, a blood hCG test from your GP can confirm your pregnancy is progressing.
In Singapore, the dating scan is typically done at 8–10 weeks. It confirms how far along you are, checks the heartbeat, and rules out ectopic pregnancy. The Nuchal Translucency (NT) scan, which screens for chromosomal conditions, is done between weeks 11–13. Both are available at KKH, NUH, Thomson Medical, and private OB clinics.
Focus on folic acid (400–800 mcg daily), iron-rich foods (red meat, lentils, spinach), calcium (dairy, tofu), and protein (eggs, fish, chicken). Avoid raw fish and shellfish, unpasteurised dairy, deli meats, and raw sprouts. If nausea makes eating difficult, eat small amounts frequently - Crackers, plain toast, bananas, and ginger are often well-tolerated.
Week 9 at a glance
Pregnancy Tools
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