Hi and welcome to Healthcaremagic. I understand your concerns and I will try to help you as much as I can. Most such lumps are benign and may be just a cyst or lipoma. However it would be good to do ultrasound to rule some more serious diseases out. . MAsturbation and intercourse should be avoided till pain persist, if possible since I may prolong inflammation course. Some more serious conditions such as tumors or torsion are rare but in doubtful cases you should do Doppler ultrasound or scintigraphy. I hope I have answered you query. If you have any further questions you can contact us in every time. Kindly regards. Wish you a good health.