Some mild swelling during pregnancy may occur because of normal fluid
buildup. Swelling is most likely to be noticeable in your face, hands, or feet.
As your pregnancy advances, your uterus puts pressure on the circulation to
your legs and may cause swelling in your feet and ankles. Normally, foot
swelling gets worse during the day and resolves at night.
If swelling of your face and hands does not go away during the day,
this may be a sign of
preeclampsia. Symptoms may develop gradually or
suddenly. Preeclampsia is more likely when new swelling of your face, hands, or
feet begins suddenly and you have a sudden weight gain of more than
2 lb (0.9 kg) over a 24-hour
period during your third trimester, particularly if your blood pressure is
high.