Easiest way to put the situation is that I have a somewhat large, probably slightly smaller than a dime, sized dark red bump underneath my right thigh. Thing is, its been there for years, and it usually never bothers me. Its just every few months it will get a little bit bigger, swell some, and bother me when I put too much pressure on it. It usually goes back to normal size in a few weeks and then it wont do it again for another few months. I talked to my doctor about it briefly when I was 16, and she said it was nothing to worry about, but I still dont think its a normal occurrence. I popped it once or twice before when it was swollen up and a very dark red blood came out of it, it seems alot thicker than normal blood, and much much darker. Ive heard of bumps like this before, but never ones that they for years, and only bother people every once in awhile. Also its just that one, Ive never found another one.