First trimester · 29 weeks to go
| Fact | Week 11 |
|---|---|
| Days of pregnancy | 71–77 since LMP |
| Gestational age span | 10w0d to 10w6d |
| Trimester | First trimester (weeks 1–13) |
| Pregnancy month | Month 1 (weeks 1–4) |
| Average length | 1.6 in (crown to rump) |
| Average weight | 0.25 oz |
| Size comparison | a fig |
| Weeks remaining | 29 (40-week due date) |
Week 11 marks a shift: nausea often loosens its grip and appetite returns with opinions. The baby's head is still about half the total length, but the body is straightening from its C-curl, and tiny fists can open and close.
Tooth buds under the gums harden, the diaphragm forms, and the baby may hiccup, though you can't feel it. Skin is translucent, with blood vessels visible through it. Boys begin producing testosterone this week.
Gestationally, week 11 means you are 10 weeks and 0 to 6 days pregnant, day 71 to day 77 counted from the first day of your last period. This is week 11 of the first trimester (weeks 1–13). Prenatal appointments run about every four weeks in this stretch. Week 12 brings the close of the nuchal translucency screening window (weeks 11–13). If your cycle runs longer or shorter than the 28 days the due-date math assumes, your ovulation date and due date shift with it, which is why a first-trimester ultrasound remains the gold standard for dating. Every number on this page is an average across pregnancies; your own scan dates and your baby's measurements are what actually describe your week 11.
Hydrate and stretch your calves before bed to blunt leg cramps. Ask about a first-trimester screening (NT scan plus bloodwork), typically done weeks 11 to 13.
Weeks of pregnancy don't map cleanly to calendar months, but the common division puts week 11 falls in month 1 of pregnancy (weeks 1–4). Week 11 is part of the first trimester, which runs from week 1 to week 13. Gestationally, week 11 means you are 10 weeks and 0 to 6 days pregnant.
At week 11 the baby averages 1.6 in long and weighs about 0.25 oz, roughly the size of a fig. Sizes come from fetal growth charts (crown-rump length before week 20), and normal variation week to week is wide; your ultrasound measurements always outrank a chart.