Call your doctor. You must check your Blood pressure. High blood pressure can cause the swelling. I hope everything is ok but I'd still call my doctor.
Got my blood pressure checked and it was normal... could thr b any other reason??
A lot of women swell up toward the end of pregnancy. Drink plenty of fluid and try to put your feet up whenever possible (above heart level is best). Those things didn't work for me, maybe for you. The other solution is delivery, but you don't want to fo that quite yet.
Good luck.