I am not a virgin, and haven't been for a while. My period is not due to start for a week, and I am on Nuvaring, so I know for sure it is not supposed to start yet. When I removed the cup it had about an 1/8th of an inch of watery blood in it. Did it suck blood from my uterus? I have had things larger than my keeper moon cup in my vagina, so I doubt it is hymen related. I am scared to try it again. What is happening?