Hello,
Such a bump can be angiokeratoma, folliculitis, cyst etc. It could be also genital wart due to human papilloma virus (HPV) and it needs immediate attention for treatment. You should consult a urologist for examinations. Tests for screening HPV are essential.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.