Immediately see a doctor. My son had a blood clot which moved from his leg, broke into 2 pieces and then stopped up 2 artieries in his heart immediatly killing him. It came from setting too long in classes at college.
You see a doctor right away if you suspect you may have one.
Go to Web MD .com they have good info
NOW would be a great time to see a doctor ! if you have a blood clot in your leg, it's a matter of time before you have a heart attack / stroke !!!