if there's a black dot in them that could very well be an ingrown hair. but really as embarrassing as it may seem, you have to go to the doctor because if it is something more serious it will only get worse. HPV is not as big a deal as everyone says. If for some reason you do in fact have warts, they can be taken care of and very often they do not return and your body clears the infection.
First questions: are you sexually active? If so, when was the last time you had unprotected sex?