Hi.. I had A HSG done about a year ago to rule out blockage also.. it is not as bad as they make it seem.. i must say it was nerve wrecking but the worst part about it for was when they started to push the fluid thru the tubes... its a little crampy but over all it was not that bad...
My Dr. had told me i can take some aspirin to help with pain.. but i didn't even need it..
I say do it.. it's not as bad.. to be on the safe side maybe you should ask your Dr. about possibly taking some aspirin to help with pain..
Hope it all works out for you.. Good luck!!