Hi Nicki,
I developed a clot in my leg following my surgery. It was very painful at the time and was also quite discouraging - it added to the feeling of my body failing me. However, the meds were effective in dissolving it and the painkillers sort of took care of the clot pain as well as the radiation pain. My doc said that cancer patients are more succeptible to clotting than other folks.
Hang in there. Hopefully, things will get better quickly. Best, Sheldon