So this is my first time with the cup and I honestly don't know what's wrong. I never hear a 'pop' and the cup doesn't seem all round and perfect when it's all in. I have tried different folds, nothing seems to be working. Also, I don't know but when you insert a finger, do you feel a muscular hard thing just inches into the vagina? I am wondering if that's preventing my cup from opening fully? Help!!