There is a fishy vaginal odor that does not go away even i shower using vagisil. it is even worse after intercouse. what is the cause and cure for it?

Bv: Most likely you have bacterial vaginitis- an overgrowth of normal vaginal flora, usually treated by specific prescriptional antibiotic, just go to your doctor, get it checked and get a script.

Bacterial vaginosis: Vaginal odor is from bacteria, as bad breath results from bacteria in the mouth. Vaginas all have bacteria. If you become colonized with bacteria known to cause troublesome odor, the key is management, not cure. Controlling bacteria overgrowth can be managed like using mouthwash to do so in the mouth. Occasional douche with "medicated" product is helpful. Look for a douche with "povidine".

BV: Bacterial vaginosis is classic for this. It comes from a change in the bacteria normally present in the vagina. Will need a prescription to restore the normal flora.