The whole doctor-patient thing reminds me of a couple of incidents.
I had an operation scheduled and I would be out of commissin for a while so Woodsman and I decided to have one last good session. He got a little carried away and I ended up with a big bruise on my breast. (I had never had a bruise there before. Ironic isn't it.) The doctors and nurses never said a word about it, though I know they saw it since I was naked on the operating table.

A few months later I was due for a check up and we were in a session. I was being punished for something (I can't remember what, but it was probably something I forgot to do, since that's where 90% of my punishments come from.) It was getting intense and between my screams I reminded woodsman to be careful because of the doctor's visit. His response was, "He won't be surprised." Which started me giggling, and he started laughing too. Kinda ruined the mood at the moment.
He had to step out for a while while we both regained our composure so we could continue.