The pregnancy is divided into three trimesters and each trimester has its own characteristics. A trimester is a period of 3 months in which development of different parts of baby takes paces.
These are the changes appear during first trimester:
- The baby develops all its organs by the end of third month
- The heart starts functioning and the formation of bones begin
In third trimester, baby goes through following stages:
- External genitalia starts forming
- The fetus starts moving inside the amniotic fluid
- Tooth buds are fully developed
- At this stage, the heart is developed and functioning properly
