Ok so I'm using this for the first time. I started my period yesterday but was using my tampons. Now today I'm trying the cup but I'm really terrified I don't have it in right. It's in now but there's a little blood coming out. Is that leftover that's in there or what? The cup is open cause I felt it pop. The little stem is supposed to be sticking out almost like a tampon string or its supposed to be inside? It went up there so high I have to squat on the floor to even feel the stem.