Definitely a no go area for me.
Was in that position when he decided to change position to mish and condom was off and 'missing '.
I had a wall mirror and had been watching him because i couldn't understand his rhythm so knew he hadn't tampered with it . ...... he offered to 'look' for it in me and when i felt i was going to get fisted for the first time in my life i asked him to stop.
Ended up in A&E
... and to quote the doctor "condom was so far lodged up in you, there is no way you could have gotten it out on your own".......the whole embarrassing A & experience plus the worry before STI test results came back was just too stressful........
On a lighter note i was told by one of the doctors that they apparently have had to extract all kinds of things from down there from a broken off cucumber, carrots , hair brushes to household appliances