I had one this past summer and I was too nervous. I thought I was going to have an attack waiting in the waiting room. I was like hurry up knock me out soon:). The nurse came in, asked me a few questions then I was instructed to undress from the waist down with socks still on and put the gown on open in the back. Finally after about 10 mins sitting there I was giving an IV without fluids at this point. I handle needles fine so that part was no big deal. Then she wheeled me through the halls in my bed and into an exam room. The nurse turned on some music and I was instructed to lay on my side and just relax. She started putting the fluids into my IV. The doctor came in and made sure I was comfortable and talked a little and then that was it, I was out. I woke up in NO PAIN what so ever, however I was very tired I slept most of that day and all that night. The next day I was up running around with my 2 year old. The only pain I ever felt was doing the enema, yuck!!!!!!!!! I think that is it, hopefully you will also have a painless procedure. Good luck and feel free to ask more questions.