What pregnancy week 11 means
Screening window opens. “11 weeks pregnant” means 11 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 9 weeks. Week 11 runs from 11 weeks 0 days to 11 weeks 6 days; on the following day the pregnancy is 12 weeks.
Your baby at 11 weeks
The head still makes up about half of the baby’s length. Hair follicles are forming, the diaphragm is developing and the baby may begin to make hiccup-like movements.
A common way to picture it: the baby is now about the size of a fig — roughly about 4 cm and about 7 g. These are averages; babies grow at different rates, and ultrasound measurements vary.
Your body at 11 weeks
For some, nausea starts to settle around 11 or 12 weeks. Others notice more energy. Increased blood volume can make you feel warmer than usual.
Care and appointments around week 11
The nuchal translucency (NT) scan, part of combined first-trimester screening, is typically done between 11 weeks and 13 weeks 6 days.
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 11 in your pregnancy timeline
Week 11 is in the first trimester (weeks 1–13) and in pregnancy month 3, which covers roughly weeks 9–13. The second trimester begins in 3 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 11 weeks 0 days today. For dates based on your own last period, use the calculator above or the main Pregnancy Calculator.
11 weeks pregnant in days and months
11 weeks is 77 days of pregnancy — 28% of a 40-week pregnancy. Counted in calendar months, 11 weeks is about 2.5 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.