12 weeks pregnant: the key facts
| Trimester | First trimester |
|---|---|
| Month of pregnancy | Month 3 (approximately) |
| Week of pregnancy | Week 13 (12 weeks completed) |
| Weeks to the due date | 28 weeks |
| Days since conception (approx.) | 70 days |
| Baby’s size (rough comparison) | About the size of a lime |
What typically happens at 12 weeks
The uterus is starting to rise above the pelvis. Many people share their news after a first-trimester scan around this time.
In the first trimester, the body is adjusting quickly to rising pregnancy hormones. Tiredness, nausea and breast tenderness are common, although some people notice very few symptoms. At 12 weeks you have about 2 weeks to go until the second trimester begins at 14 weeks.
Every pregnancy is different, and the timing of tests and appointments depends on your healthcare provider and country. If something worries you — for example bleeding, severe pain, fluid leaking or, later in pregnancy, a change in your baby’s movements — contact your midwife, doctor or maternity unit straight away.
12 weeks pregnant in days and months
12 weeks is 84 days of pregnancy, counted from the first day of the last period, which is 30% of the way through a 40-week pregnancy. In months, 12 weeks is roughly 2.8 calendar months — usually described as month 3 of pregnancy. Because the baby’s age is counted from conception, it is about two weeks younger than the pregnancy: roughly 10 weeks of fetal age.
Your dates if you are 12 weeks pregnant today
Being 12 weeks pregnant today means the first day of your last period was around and conception most likely happened around . Your estimated due date is , and you will reach full term (39 weeks) around . For dates based on your actual period, use the calculator above or the main Due Date Calculator.
Other weeks
10 weeks pregnant · 11 weeks pregnant · 13 weeks pregnant · 14 weeks pregnant · full pregnancy timeline