Question 1

How are pregnancy weeks calculated?

Accepted Answer

Weeks are counted from the first day of your last menstrual period (LMP). This means the first 2 weeks are technically before conception.

Question 2

How many weeks does a pregnancy last?

Accepted Answer

A normal pregnancy lasts 40 weeks (280 days) from the LMP. The baby is considered full-term between weeks 37 and 42.

Question 3

What are the pregnancy trimesters?

Accepted Answer

First trimester: weeks 1-12. Second trimester: weeks 13-26. Third trimester: weeks 27-40.

Calculadora de Semanas de Gravidez