Sex with Flex?

I’ve read about flex but don’t know anyone who uses anything like it. The menstrual cups you’re supposed to be able to have sex with. Has anybody tried? I want to try since my boyfriend has been very horny (me too honestly) and I’m tired of shower sex and don’t want to get blood all over so I’ve been turning him down. I use the diva cup since I’m more concerned about being eco friendly so I don’t want to be throwing away stuff but decided to pick up this “discovery kit” at target too since can’t complain about having a second cup and then I could try the discs. I’d buy more flex discs if they’re decent for sex. Obviously the diva cup is not for sex and also how unsexy is it pulling that thing out before sex 😂😂😂😂

I just really want to know if people have had sex with the discs in. Did it move it? Could you or him feel it? I’m interested ladies on your thoughts!!

EDIT: I have literally bled through a towel having sex. My period does not care what I’m up to it will continue to bleed a ton. Just easier to not have to really prep for sex