I had an ultrasound on my (full!) bladder and kidneys today. I let the female technician know that I had a menstrual cup in because I figured she might see it. She had never heard of them, so I explained all about it. She didn't seem grossed out by it and said she would tell the other women in the office about the option. She showed me it on the ultrasound which was pretty cool! She said that my cervix was sitting right inside of it. She had to make a note on the ultrasound about what it was so the doctor didn't think I had a growth or something.