Saline sonogram vs hsg vs iui experience (pain)

Hello

For any ladies that’s had saline sono and hsg or even

IUI

, would you share your experience in terms of pain and experience

Quick background, I had an extremely painful hsg- needed dilation, clamp to hold my cervix, multiple tries etc....

I’ve had

IUI

x2 , very tolerable just a quick twinge

Next I’m scheduled for a saline sono, but just want to brace myself... if it’s similar to hsg... geez that was so awful

Thank you so much in advance for your response and sharing ! Couldn’t get thru all this without this support