Dew, glad your headache is getting better, i can imagine what you must feel like being idle, i was like that too and it stressed me out and i couldnt find anything to do, canvas painting sounds lovely .
HSG i must say wasnt a very pleasant experience, was ok not too painful but more uncomfortable,. they basically first wash your bits over with betadine anti infection solution, that was for precaution from catching an infection through the procedure.
so they did that, and then they ask you to hold your knees to your chest while you are lying on the bed so that it gives them maximum penetration. they then insert a catheter full of blue dye/oil solution up you and then you can watch yourself on the screen and you can see your tubes and the dye flowing and then they see that the dye passes through your tubes without getting blocked. if it has passed, then it means your tubes are clear., they then take the catheter out.
after that, it may be a little uncomfortable to walk and your abdomen might cramp too, but they say that the dye flushes out any tiny particles in your tubes and that makes it easier for the eggs to travel down and implant or whatever.
i had my HSG in october / november last year and got my BFP in feb, but according to my LMP dates, actual date of conception was the 31st of jan, so i would say within 3-4 months of HSG. i didnt get pregnant immediately obviously , i would say mine was pure luck because i was not temping or using OPKS or anything.
by the time i took the advice of the ladies on this thread to start temping, i hadnt realised that i was already pregnant and that cycle of temping, i already had my BFP which is why my temp had risen on my chart.
i hope the HSG gives you some answers and that it all turns out ok for you. xx
hope my explanation has cured some of your curiosity. i was being truthful about the uncomfortable bits and dont want to scare you off, but i would say that procedure does rule out a major issue which is blocked tubes which could happen at any time for anyone.
for example, even if someone has been pregnant before, their tubes could get blocked afterwards, example i had a termination before and maybe after the operation, my tubes could have been blocked from bits of my own tissue or whatever and HSG gives you the answer to whether your tubes are free or not. and with your MMC previously i would definetely recommend the HSG especially if you had a natural MC and no operation.
praying for you and hoping it all works out. xxxxx