Doctors called hematologists have special training in bleeding disorders. They can help you find the best treatment options and help diagnosis possible problems.

Excessive blood clotting is a condition in which blood clots form too easily or don't dissolve properly. Signs and symptoms of a blood clot in the deep veins of the leg may include pain, redness, warmth, and swelling in the lower leg. These signs and symptoms may suggest deep vein thrombosis (DVT)

I'd suggest that you go first to your family doctor and request some basic tests: a physical exam, a family medical history and blood tests (Complete Blood Count and Platelet Count, Tests for Clotting Factors and Clotting Time) will help exclude or confirm blood clots. More info on blood clots here: excessive blood clotting. Then, if necessary, you can request to see a hematologist for follow up.