Cause No.1: Swelling due to pregnancy
Swollen ankles are commonly combined with the act of being pregnant, a common occurring scenario in pregnant women. The condition gets triggered due to the extra squeezing out of fluids during pregnancy. Even the veins are more pressurized by the uterus which causes the swelling. Swelling during pregnancy can be combatted by avoiding standing up for long hours and sleeping on the left side to be able to trigger the return of venous to the heart.