Awww scotch you don't need to be scared about your HSG, it's honestly not that bad. The worse bit of pain lasts for a couple of minutes at the most, and it's just like bad period pains. But some people don't feel anything apparently, let's hope you're one of them!
I know you know this but it's just standard procedure, tick tick tick to check there's absolutely nothing else going on, that way you know the IVF will have the best possible chance.
Chin up xxx