I have these bumps that come and go and sometimes there are multiple bumps at one time! Some of them itch really bad and others dont itch at all, some of them explode on there own and a sticky white substance comes out, others explode and blood comes out but they usually swell, close themselves back up and stay for a while! I have had one for quite sometime now, it swells immediately when I scratch it and it explodes frequently releasing a white substance with a mixture of blood! It also itches tremendously...I only get these bumps in the actual pubic area, doctors say its not herpes and all of my STD tests were negative! What can I do?