Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Your issue of erethral mass may have othing to do with your earlier PCNL and RGC. Further PE is an altogether different problem with diffirent kind of treatment. Paroxetine
is a good drug for the PE and is useful for pre mature ejaculation. Also there are certain exercises which can be done to improve the PE. The same can be advised to you by a sexologist/psychiatrist
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you. You just need to contact me on this below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.