Here's my TMI opinion (and how I would decide whether to go to the DR or not): If it's a healthy smell I wouldn't worry about it. If it smells wrong or bad (instead of just like your normal odour but stronger) I would go to a DR straightaway. There are lots of yuckko bacteria that can thrive in *ahem* moist environments, and the fishy smell is indicative of only one or two of them.