ive had these for about 8 years now. stupidly, a few years ago i popped one which bled quite a bit then scabbed over, it didnt come back though. ive got quite a few of then in the same place though and obviously dont want to have a go at all of them. what could it be? after all this time i still havent plucked up the courage to go to my doctors, however, im sure its not an std because my fiance had been checked and was clear.