So, you may haver bacterial vaginosis. This is an overgrowth of bacteria in the vagina and it's hallmark signs are strong odor (that can get worse during sex) and a thin, greyish watery discharge. While it CAN go away on it's own, most people get rid of it by taking antibiotics prescribed by a doctor. If you are sexually active and it doesn't go away after taking antibiotics, they often will treat your regular partner too since the bacteria can go back and forth between partners. But even those who aren't sexually active also get BV. Change your underwear often especially if damp and wear cotton undies. Air dry by sleeping without underwear occasionally. BV loves, dark, moist warm areas to grow in. So, try not to provide that environment with the above tips. Also, you can try an over the counter probiotic tablet or use one of the food products like yogurt that has it in it. good luck