I am still recovering from a severe case of cellulitis in my lower left leg and foot. I am male, 35 years old, and my weight is 155 pounds. I also have a fairly large blood clot behind my knee on the same leg. I've been taking warfarin since 2013, but the clot just seems to be getting bigger. I went to a vein surgeon and he said there is nothing I or he can do. I can barely walk, my leg is still deep red and the skin is hard.... what do I do?