Menstrual cup

Who uses them? Do you like them? Any tips for making them more comfortable or do you just get used to it? I just bought one and am so turned off to it because it's like pinching me and is so uncomfortable!! I also didn't catch the OR have delivered vaginally when choosing between the two cups and didn't get the right one since I have delievered vaginally. Will I be able to make this one work or will I need to buy another one? I'm so mad!! Sorry for all the questions lol I cut cold turkey on tampons and had to buy it in a pinch since i got AF yesterday! TIA for help and advice!