I get the same thing sometimes. I never got it when I first started masturbating. It's probably just some build up of semen that never got out but I am not positive--I am no doctor. This soreness personally is the least of my sexual problems but I have noticed it and it is slightly painful. After masturbating and feeling the pain I have tried masturbating again and I tried going to the bathroom and the pain went away each time. Usually the pain lasts about 10-30minutes for me. I am sure it is nothing serious. There are more serious side effects from masturbating that I would be more worried about (PM me if you want a list of rumored side effects and the ones I have personally experienced) but if you get obbsessed about it then ask your doctor or keep trying on this forum.

Thanks, I appreciate the response, it seems its something I'm stuck with and not much I can do.

It just bugs me that I have this problem when I am otherwise extremely healthy, fit, and happy. I just don't want to have any of these problems when I do become intimate with someone.

Do you think it might be muscularly related? Do you have tight pelvic floor muscles? Some men have problems in that area as a result of tight muscles. I believe there is a book called "Headaches in the Pelvis."

If you google it maybe you can find out what it's trying to treat and see if there's a list of symptoms. If that's not the correct book title, let me know and I'll try to find it.