I answered this question for you earlier. This is the problem with multiple posts.
Emma didn't know that you had tested negative for stds already.
Since you have, this doesn't belong in this forum. It belongs in the urology forum. Please don't ask again in this forum.
Aj
Sounds like you could have a urinary tract infection or possibly jock itch (a fungal infection caused by tinea cruris). I'm not really sure of what causes pelvic pain in men. However, the only way to be sure is to get an accurate diagnosis by a health care provider.
Good luck,
Em