I think it's too big for me. I have had the Large original Lunette for a year and a half. I like using it, but it seems that my cervix gets pretty low during the heavier days of my period. I try to insert the cup as far as I can and I've used some of the tips I've seen on here. They have helped, but I do not like that I feel I have to wear a pad and pantyliners in the front and back of my underwear because I fear that the cup may leak without my expecting it. It seems to gradually slide out over time. Not enough that the whole cup or even half of the cup comes out, but enough that the base begins to slightly jut out of my vagina. I'm begining to suspect that maybe my cervix isn't getting quite in the cup but I'm not sure what else I can do at this point.