I tried a menstrual cup for the first time and it had a stick at the bottom to use to pull it out... it was all fine until I went to bed. I woke up the next morning and the stick had gone so far up I couldn’t even feel it when I put my fingers up. It took me so long to get it out. The next day I used it and it was fine again, but I had the same problem when I slept. I have no idea why!!