I had liposuction of inner thighs, belly and sides about 7 1/2 weeks ago and noticed today there is a black and blue mark on back of upper part of calf. It looks and feels like a bruise size of quarter but no pain or swelling or lump. Could this be a blood clot? I have no idea when it appeared but has to of been in the last few days or I would have noticed before. I am concerned because of the recent surgery.