Thanks to everyone who spent so much time giving me advice in advance of my appointment today. I really appreciated it. So here is the outcome.
The Doctor is a crazy woman! Furiously active, non-stop talker in a thick French-accent, but genuinely nice and wanting to help. However, as the husband couldn't stop saying once we left "absolutely fucking barking!". I liked her.
I didn't get the name of the irregularity they found at the HSG but she told me what it was. Basically when they take the x-ray of my tubes they expect to see a a smooth edge to the tubes. Mine have a jagged appearance, so unblocked but possibly some scar tissue. Doc isn't too worried especially as it hasn't shown up on any other scan I've had to date. But she is going to show the x-ray to a specialist and has suggested another scan to check this out specifically. Depending on what they find they might do a hysteroscopy.
We then got onto the subject of the bloody cycles. Or not so bloody. At the moment I am on day 40 and the last cycle only ended on day 83 after provera. (And yes, I took another pregnancy test this morning just in case ...)
This really galvanised her, and I didn't think she could get more energetic. She booked me in for the scan next Wednesday and told me to book the next available appointment with the specialist nurses clinic so that they can start me on something to regulate my cycles.
The next available appointment with the specialist nurse is in September, the end of September. In 56 days. Most women will have two more opportunities to ovulate/ conceive within that time. I have no idea if I'll get another chance before then. But at least things are still moving forward. And whilst the waiting is annoying I know I'm pretty lucky to be getting this kind of help for free (taxes don't count, right?) and they are taking us seriously.
So generally feeling pretty positive, but had hoped that I'd be coming away today clutching drugs that would start my ovaries pinging out eggs.