I have small white bumps around my butt, they don't itch or hurt. When I pick them they bleed and this small white thing comes off, and when I look at it closely it's like two tiny pieces stuck together. I only have like 3 or 4 at a time until recently, I also have a rash of smaller bumps that I can't pick plus the 3 or 4 small bumps. I don't know if the bumps and rash are related but I'm worried it's an STD. I am an 18 year old female in good health and hasn't gone to the doctor for anything but strep throat, I also have mild asthma but also do not think that would be related to the bumps.