J.T.
i had it done about two years ago. i think the experience varies person to person due to pain tolerance and also if you have any blockages or abnormalities, the counter pressure will prob be much more intense, causing a lot more pain. that said, for me, 90% of the time the test was being done, i was fine, just felt like a normal pelvic exam. but, there was about 30 seconds that i was in fairly intense pain, but the painful part was over just about as fast as it started. don't be nervous, the pain won't last long - you will get through it. good luck :)