Question: Anyone every had a HIDA scan?

Just wondering if anyone has ever had a HIDA scan done. I am a 41 year old white female and have been having stomach problems lately. Especially an annoying pain in the upper right area of my stomach and the doctor did an ultrasound of my gallbladder to see if I had gallstones but I don't so now she is going to do a HIDA scan which is supposed to check the function of your gallbladder so I was just wondering if anyone else has had one and if so, what was it like?