Who has witnessed your rectal exam?

When I was getting a medical exam to stay out of Vietnam, the doctor was performing a rectal exam just as his very pregnant nurse knocked then walked immediately into the exam room. She apologized but I told them it was OK, that I didn't care. The doc asked her to leave anyway. Nonetheless, for a few seconds she had a full view of my ass with the doc's finger in my rectum. I found the experience a little kinky, both embarrassing and exciting at the same time.

Decades later one particular lady doctor always brought in a female chaperone during my genital and rectal exams. The procedure was for me to hand the paper sheet, which had been covering my lap, to the chaperone as I stood up to be examined. Then she would hold the sheet where it would obscure her view of my anatomy. The last time I saw that particular doctor, however, I forgot the protocol and just put the sheet on the exam table. The doctor didn't say anything and conducted the examination in full view of the chaperone. Once again my feeling was embarrassed but excited.

Has anyone else felt that way when other medical personnel were present during a potentially embarrassing exam?