I had a DVT in my right calf several years ago. I was on Coumadin for 6 months. At times I still have some pain in my calf. Today I am experiencing a lot of swelling in my calf, compared to my other calf it s about 2 inches bigger, I have some pain, and my calf feels heavy, but nothing compared to what I had several years ago when I discovered I has a DVT. I was sitting for a long period of time today doing data entry, should I be concerned, or is this a common side effect from having a DVT several years ago.