Thank you for asking. I can understand the distress you are through. The pain could be due to strain of muscles while masturbation. Excessive masturbation can cause such a muscular strain. Sex can be a discomfort when having such a pain. There is no major reason to be concerned. Rest for a week. Do not masturbate or have intercourse for a week, it should be fine. If the pain is unbearable, in such a case immediately consut a nearby general surgeon.