HSG Procedure

I am scheduled for an HSG procedure on Wednesday morning, after being unable to conceive for over a year. Anyone had this done? What was your experience?

UPDATE: That was the most painful thing I’ve experienced to date! It was fine until they had

To do one last dye insertion and blow...I seemed to have had a blockage. It was awful. But, in retrospect I’m glad there was blockage. I wanted there to be a reason I wasn’t getting pregnant & hopefully...that was it.