Had extreme pain after ejaculation (both self induced and while having ehhem ehhem). Went to my NY college clinic and old MD said dont worry about it, its normal and caused by the velocity of the sperm and that i will just have to live with it. Just in case i had myself check for all STDs and said ..ok i guess i will have to live with it. Ejaculation felt like ******g razors, made my life miserable. 2 and a half years later (after having insurance) I went to a Urologist who said it was prostatitus and not velocity of anything. I went to track that old physican down and they said he had retired.
Lesson: ALWAYS get a 2nd opinion.