What if you've been to the doctor and every test came back normal and you still have a lot of discharge that has a fishy smell?

If you are referring to vaginal discharge:

This sounds weird, but take whole organic PLAIN yogurt, and use it as a douche. It helps stabilize the pH and encourages beneficial bacteria to flourish. The fishy smell is caused by bad bacteria that somehow over populated due to poor diet, too much sex, etc. Clean thoroughly afterward of course. Acupuncture can help with chronic conditions.