I have unprotected sex with the same guy for more than two years. I ve been on birth control for a while and my cycle is different. The birth control I have is camrese where I get my period every 3 months. I have been experiencing thick brown discharge for a couple days now. The one day i wiped and there was some blood. Yesterday I didn t have any it was thick white discharge and today it came back like a grayish brown. It doesn t really have a profound odor I don t smell anything different. There s no itching or anything else. What could be causing this discharge?