I (man) have a strong fishy smell coming from my crotch. i recently ended a sexual relationship with a woman who I found out was sexually active with other men. I immediately had a full blood test for std's, got a shot and took some pills through the VA. They said all the results came back negative. I've never had any smell from my crotch before this relationship. When I shower in the morning it smells ok but by the end of the day it gets real bad.