I personally haven't tried this but I know 2 of my girlfriends this a few times. After late night sex they go into the bathroom to insert their Diva Cup. They told me that this makes it as they say "No Mess Sex." Both are on the pill so getting pregnant isn't their thing right now. I have heard of women doing this to conceive. Personally, if I did this I'd just hop in the shower before I go to sleep. I guess what ever works for them. Have you heard of this?