@PinkLady4 - I have the same problem. It's mostly my ankles that swell up on me. The doctor told me to lose 25 pounds, and exercise every day. He said I could also try to massage my ankles to try to push the tissue fluid back into the lymph vessels so it will drain away.
Another thing he said to do is to wrap my ankles in a elastic bandage to help squeeze the fluid back where it belongs.
When you are overweight, the lymph vessels are under pressure from fat tissue, become blocked and the fluid is stuck and can't drain.
I've been trying to exercise and lose weight. The swelling is getting some better.