So, yesterday at 9pm I put in my first ever nuvaring. I was surprised on how easily I put it in and how it stayed in. I went to bed around midnight and about a half hour later I felt something weird. I checked and the ring was still in, but right at the entrance. I went to the bathroom and put it back in, but when I woke up in the morning it was in that position. I'm kind of freaking out- is it still effective like that? Is this happening because I'm on my period and things are more slippery down there? Or will this always happen?