I am a runner and about two weeks ago I was awaken with a deep pain in my lower calf. I thought "pulled muscle". This went on for a few more nights and then the pain stayed with me all day. I had no swelling or redness. I went to the Doctor and an ultrasound revelled a blood clot. The Doctor said it was one to two months old and calcified and I had nothing to worry about and to go off birth control pills. I do not remember any pain one or two months ago and I asked him why I was feeling this pain now. He said maybe a pulled muscle or phlebitis. In which case he said he would prescribe Naproxen for either condition. I feel like I should be looking into this further. What other test should I have done? The pain is better but running is really hard my leg feels very heavy and weak. Also we are leaving in two days for a vacation that involves an 8 hour car ride. Thank you for any replies.