bv after antibiotics :: Article Creator What Causes Gray Discharge? 2 MDs Explain. There are certain vaginal discharge colors that'll set off some serious alarm bells (looking at you, green). But then there are others that fall into a confusing middle ground, like gray discharge. After all, it's different from your usual discharge color, but gray also doesn't seem all that far from a more "normal" white hue. So, should you be concerned about 50 shades of gray or not? At the end of the day, any kind of gray discharge isn't ideal. "It can mean that you have an infection," says Christine Greves, MD, an ob-gyn at Orlando Health Women's Institute Center for Obstetrics & Gynecology and obstetrical and gynecological surgeon at Winnie Palmer Hospital for Women & Babies. That's not a guarantee, of course, which is why it's important to be evaluated by a medical professional, just to be sure. While