Menstrual Cups

hi

Okay ladies, I'm interested in hearing from people who have tried menstrual cups. I'm curious. I know about them and I'm not totally ignorant but I saw one that allows you to have sex with it in and I'm more curious now. Are they comfortable? Can I buy them at a store, like Walmart maybe? Do they come in different sizes? If you've tried them please comment your experience, how it went, and if you reccomend them. TIA. 💜