Update: I had the Maya abdominal massage yesterday and it was actually really great. The therapist was very nice and seemed to know her stuff, and once she got to massaging she said it seems like the ligaments on my right side are quite tight and had pulled my uterus off-center, so she tried to relax them and move it back to its proper spot. By the end of the appointment, my abdomen felt very warm so it does feel like I have increased blood flow to the area. I will probably go back for one more massage a few days after my HSG so that it can help clear the dye and gunk and contaminants out from the HSG.
I'm feeling less afraid of the HSG than I was before. Just knowing when the appointment is and when it will happen helps. It's no longer in the realm of scary hypotheticals; it's just something that's going to happen. Weirdly that's released most of my stress about it. It will probably hurt, but I've been through painful experiences before, and I will most likely survive, and it just is what it is. It's worth going through it to know if there's a blockage or clear one. I'd rather go through the HSG than suffer through another month of Clomid wondering why I'm not pregnant when it's working. Taking another round of Clomid when there might be a blockage is just too awful to contemplate.