When I was about 13 years old, I noticed there was a small bump on my buttocks that became very sensitive to the touch. I assumed it was an ingrown hair or possibly a mosquito bite so I ignored it. I woke up one night with the sensation I had wet the bed, but I quickly realized that the bump had burst and clear fluid was coming from it with a little bit of blood. I "drained" the bump and cleaned it with water and some hydrogen peroxide I had found. The result was an indented purple colored scar where the bump had been. Few years later now, I feel like it may be the same type of bump and am worried this will happen all over again. I've recently lost my health insurance due to my mother getting laid off and am nervous of going to the doctor and having to pay a lot of money for something that may not be serious. Any ideas of what this might be???