There is no way to esimate the risk from a single exposure like that, except to say it is extremely low, probably zero. Anyway, if you were infected 4 years ago, you can assume your immmune system would have cleared it up by now. If you were to develop genital warts someday, I would assume they were acquired elsewhere.
Good luck-- HHH, MD
When I squeeze it, it hurts really bad once I've bothered it. Before I bother it, its ok when I touch it until I do it for a while. Also, sometimes when puss comes, blood does also. Then i realize the inside comes out and I can feel the inside of the blister and I can see the little balls and they are red. I can pull them and its painful. It seems like a bunch of skin compacted together under my skin. I also realize no hair grows out of the blister but hair grows out of the part the blister isn't covering. I always think that when the blister opens i can just pull the little balls out but they are attached to the inside of my thigh so of course that hurts. Please help me with any way to get rid of this or tell me what it could be. thanks