HSG experiences?

Re

I have my HSG in a few days and I’d love to hear other experiences!

I experience what appears to be either late ovulation (CD 20) and/or a short luteal phase (8-9 days) in a 28/29 day cycle. But I had my first appointment with a fertility specialist and she said the HSG is my next step.

I already had a lot of blood work done through my OBGYN, so now the fertility doctor recommends the HSG for me and a semen analysis for my husband. We’re TTC #2.