OB-GYN (Obstetrician-Gynecologist) Questions OB-GYN

Which trimester is most important for the development of a fetus?

I am a 29 year old female. I want to know which trimester is most important for the development of a fetus?

3 Answers

The first trimester is usually the most affected by environmental exposure and an embryos and further fetus (baby) development.
Second
All are important but the early stages are what is most important for normal development to avoid birth defects. After the first trimester much of the development is mainly In growth. The fetal brain continues to grow and change even after birth.