Pregnancy is one example of the type of physical stress that can cause hair loss (that and hormones). Pregnancy-related hair loss is seen more commonly after your baby has been delivered rather than actually during pregnancy. “Giving birth is pretty traumatic,” says Dr. Glashofer.

What to do: If you do experience hair loss, rest assured that your hair will grow back in a couple of months. “It’s a normal thing and it will work its way out,” Dr. Glashofer says.