42 weeks pregnant: the key facts
| Trimester | Third trimester |
|---|---|
| Month of pregnancy | Month 9 (approximately) |
| Week of pregnancy | Week 43 (42 weeks completed) |
| Weeks to the due date | 2 weeks past the due date |
| Days since conception (approx.) | 280 days |
| Baby’s size (rough comparison) | About the size of a watermelon |
What typically happens at 42 weeks
From 42 weeks a pregnancy is post-term. Your care team will discuss the options with you, if they have not already.
The third trimester is about growth and getting ready for birth. Appointments usually become more frequent, and it is a good time to think about your birth preferences and practical preparations. You have reached full term.
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.
42 weeks pregnant in days and months
42 weeks is 294 days of pregnancy, counted from the first day of the last period, which is 105% of the way through a 40-week pregnancy. In months, 42 weeks is roughly 9.7 calendar months — usually described as month 9 of pregnancy. Because the baby’s age is counted from conception, it is about two weeks younger than the pregnancy: roughly 40 weeks of fetal age.
Your dates if you are 42 weeks pregnant today
Being 42 weeks pregnant today means the first day of your last period was around and conception most likely happened around . Your estimated due date is . For dates based on your actual period, use the calculator above or the main Due Date Calculator.
Other weeks
40 weeks pregnant · 41 weeks pregnant · full pregnancy timeline