Fetal Development Guide: Heartbeat, Size & Trimester Tips

Fetal growth follows a precise timeline, from the first heartbeat to the final stages of brain development. Proper nutrition delivered through the placenta is vital for maintaining healthy fetal weight and overall wellness.

When Does an Unborn Baby Have a Heartbeat?

Published Jun,13 2017 | By Linda Hinkle

Detection of a normal heartbeat in an unborn baby is one measure of the overall health of the pregnancy. An unborn baby has a heartbeat very early in the pregnancy, when the fetus is still in the embryonic stage.