How To Reduce Swelling In Knees, Calves And Ankles After Driving?

My knees, calves and ankles are swollen, it is not red or hot, it doesn t hurt, just uncomfortable. A week ago I drove for 7 hrs 2 dys in a row and after that the swelling occurred. I stopped smoking the 1 Dec. My breathing is fine and I continue to excerise - I am over weight and am watching what I eat. I feel the edema has increased my weight. It is difficult to get up and begin walking but once I start it is o.k. I try to elevate my legs every day for an hour. I sleep well and put pillow between my legs. I blanch my ankle and can count to 3 before normal color occurs, same with my legs and knee. I was checked last year by a heart specialist and everything was fine. I have no health issues except for sinus problems I have had all my life. I do not drink. I have no family history of any health issues except my dad had alzheimers. I the only medication I take is my allergy med. which is