Can too much masterbation/ friction cause a bump on the upper part of the labia minora? tested neg 2 months ago. fingered 3 weeks ago no sores on him

Here are some ...: Analyzing the sequence of events including the onset, evolution, duration, progress, & resolution of the bump may help answer your concern. Clinically, it may be just a sebaceous cyst, which could be incidentally found through self palpation. Nonetheless, seek pro-evaluation and counseling so to resolve confusion & uncertainty and to ease anxiety and even fear. Best wish ...