What pregnancy week 9 means
End of the embryonic stage. “9 weeks pregnant” means 9 weeks have passed since the first day of the last menstrual period — the standard way pregnancy is dated. Conception usually happened about two weeks after that date, so the baby’s own age (fetal age) is roughly 7 weeks. Week 9 runs from 9 weeks 0 days to 9 weeks 6 days; on the following day the pregnancy is 10 weeks.
Your baby at 9 weeks
The main organs are all in place in their early form, and the embryo is starting to move, although the movements are far too small to feel. Eyelids are forming and the external ear is taking shape.
A common way to picture it: the baby is now about the size of a cherry — roughly about 2.3 cm and about 2 g. These are averages; babies grow at different rates, and ultrasound measurements vary.
Your body at 9 weeks
Hormone changes can cause headaches, breast changes and mood swings. Some people notice more vaginal discharge, which is common in pregnancy as long as it is not itchy, strong-smelling or discoloured.
Care and appointments around week 9
If you are considering first-trimester screening or cell-free DNA testing, this is a good time to ask your provider which tests are offered and what they can and cannot tell you.
The timing of tests and appointments differs between countries and care providers. If anything worries you — such as bleeding, severe pain, fluid leaking, fever — contact your midwife, doctor or maternity unit straight away rather than waiting for your next appointment.
Week 9 in your pregnancy timeline
Week 9 is in the first trimester (weeks 1–13) and in pregnancy month 3, which covers roughly weeks 9–13. The second trimester begins in 5 weeks.
| Pregnancy start (first day of last period) | |
|---|---|
| Estimated conception | |
| Second trimester begins (14 weeks) | |
| Third trimester begins (28 weeks) | |
| Full term (39 weeks) | |
| Estimated due date (40 weeks) |
Dates assume you are exactly 9 weeks 0 days today. For dates based on your own last period, use the calculator above or the main Pregnancy Calculator.
9 weeks pregnant in days and months
9 weeks is 63 days of pregnancy — 23% of a 40-week pregnancy. Counted in calendar months, 9 weeks is about 2.1 months, which is usually described as month 3 of pregnancy. Months are only a rough grouping; healthcare professionals almost always talk in weeks and days because they are more precise. See Pregnancy Month Calculator for how weeks map to months.