I had 3 in one go!!!! The first was ok, the worst bit was the speculum (just like a smear) the actual dye going in isn't that bad!! My tubes are blocked so Dr kept trying to see if he could get some spillage, had I known I'd have had him stop after first as that was bearable, the second and third attempt really took it out of me. I was brave and went alone but I could have really done with some support after, mainly because I was traumatised at the fact that it appeared to be showing blocked tubes and the several tries! If your lucky enough to just have it done once, you'll be fine, really no worse than a smear. Good Luck. x