The short answer
10 weeks = 3 months
At 10 weeks pregnant, you are about 3 months pregnant — in month 3 of your pregnancy and in your first trimester.
Not sure of your week? Use the pregnancy week calculator to find it from your last period, due date or conception date.
The embryo officially graduates to a fetus around now. Joints like elbows and knees are working, and tiny movements have begun — even if you can’t feel them yet.
About the size of a kumquat
size comparison
3.1 cm
crown to rump (1.2 in)
4 g
average weight (0.1 oz)
The critical window of organ formation is closing, and from here the emphasis shifts to growth and maturation. Fingernails and hair follicles are appearing, the kidneys are starting to produce small amounts of urine, and the diaphragm is developing. Bones are beginning to harden in the arms and legs.
Sizes and weights are averages — healthy babies vary widely, and your scan measurements are what count.
A slight rounding below the navel may appear, though most people are not visibly showing yet. Vaginal discharge often increases (thin, milky and mild-smelling is normal). Round-ligament twinges on one or both sides can catch you off guard when you turn or stand quickly.
Common symptoms this week
210
days to go
30
weeks to go
70
days so far
At 10 weeks 0 days you are 70 days into a 280-day pregnancy, which leaves 210 days — 30 weeks — until 40 weeks. That number drops by one for every day you move through this week. Remember the due date is an estimate: only about 1 in 20 babies is born on it, and most arrive within two weeks on either side.
Next milestone: 28 days until the second trimester (14 weeks 0 days).
A calendar month averages about 4.3 weeks — not 4 — so you can't just divide your week number by four. Instead, months of pregnancy are counted as uneven buckets of 4 to 5 weeks, arranged so the full 40 weeks fits into 9 calendar months. Week 10 falls in month 3, in the first trimester.
Your care team will always use weeks and days rather than months, because screening windows and term definitions are set by exact week — months are just the everyday shorthand. For the full conversion, see the weeks to months chart, or go the other way with the months-to-weeks guide.
Your notes will show a week and a day — 10+3 or 10w3d, for example. Pick the exact day you are on for its own day count, countdown and month answer.
| Week + day | Shorthand | Days pregnant | Days to go |
|---|---|---|---|
| 10 weeks 0 days (this page) | 10+0 | 70 | 210 |
| 10 weeks 1 day | 10+1 | 71 | 209 |
| 10 weeks 2 days | 10+2 | 72 | 208 |
| 10 weeks 3 days | 10+3 | 73 | 207 |
| 10 weeks 4 days | 10+4 | 74 | 206 |
| 10 weeks 5 days | 10+5 | 75 | 205 |
| 10 weeks 6 days | 10+6 | 76 | 204 |
At 10 weeks pregnant, you are about 3 months pregnant — in month 3 of your pregnancy and in your first trimester. Months of pregnancy are counted as uneven 4–5 week buckets so that the full 40 weeks fits into 9 calendar months.
10 weeks is in the first trimester, which runs from week 0 through 13 weeks 6 days. The second trimester begins at 14 weeks 0 days.
About 30 weeks until the 40-week mark — though only about 1 in 20 babies arrives exactly on the due date. Most are born within two weeks on either side of it.
At 10 weeks 0 days you are 70 days into a 280-day pregnancy, so there are 210 days left until the 40-week mark — that's 30 weeks. The count drops by one for each day you move through week 10.
10 weeks is 70 days, counted from the first day of your last menstrual period (10 × 7 = 70). Add the days into your current week for the exact figure — for example 10 weeks 3 days is 73 days.