For The Past Couple Of Years Fishy Smelling White Or

For the past couple of years fishy smelling white or sometimes clear fluid pours out my vagina everyday. It's gotten so bad that I need to change my panties at least twice a day because I feel wet and icky. I've been to the doctors at least 6 times about it and all they do is test me for chlamydia/gohnorea (both come back negative every time) and give me antibiotics for BV and send me on my way! I don't know what else to do! Lately I've been feeling a sharp stabbing pain in my lower left stomach too. Could all this be related to a STD? Thanks