Hysterosalpingogram test today

I will go in for my Hysterosalpingogram at 1:30pm today. After reading up on it on Webmd.com, I am more then a bit nervous about the test. My doctor told me to take double the recommended dose of OTC Tylenol an hour before the test to manage pain and she put me on a Z-pack to prevent possible infection from the dye used. I really hope the test is normal ...