... with my boyfriend. A few weeks ago (just after Christmas) I guess it got caught around his head and it came out. Neither of us notice until (roughly) 4 days later on the Monday I usually take it out. I had started spotting a few days before. Didn't think anything of it. But during those few days it was out, we still had unprotected sex. Because we didnt know it fell out.But my body adapts quickly to birth control. The Depot stayed in my system a whole year after I stopped it. But I have been cramping and bloating more than usual and these are apparent signs of pregnancy. And is it usual to feel such stabbing uterus/stomach pains when on nuvaring? Even stretching to much is painful. Have also had period for about 14 and counting