thank you for your question.
Prior to providing a diagnosis, I would need to know if you are sexually active ? If yes, this leasion may need to be swabbed for stds otherwise if not, we then need to look at your hygiene routine. Do you shave? If yes this could be a folliculitis
- ingrown hair. The other option - but I need more description of the exact location of the bump is to rule out bartholinitis ....inflammation of the gland. If this is the case and depending on the severity it will need drainage
I will also need to know if you have any discharge and other gynecological urogenital symptoms. My suggestion is to go see your doctor for further evaluation.