A vaginal discharge that has an odor or that is irritating usually is considered an abnormal discharge. The irritation might be itching or burning, or both.
If you notice a fishy odor from your vagina or vaginal discharge, it may be caused by sweating, a bacterial infection, or even your genetics.
If you have bacterial vaginosis you are most likely to notice a fishy odor after sex. Symptoms may also include itching and a white, thin vaginal discharge and no.
Pregnancy, changing hormones, or the presence of an infection can also affect the consistency and amount of vaginal discharge. Usually.