polkadot~I have a blood clotting disorder called Factor V Leiden. I am sure when you go to the RE they will test for blood clotting disorders since you have had 2 m/c. If not I would suggest one. I am glad that I found out, because that is a cause for repeat m/c. If you do have it, the day you find out you are pregnant you have to start 2 shots a day of Lovenox or Heparin. As far as before hand, I have to take one baby asprin a day, B6, B12, and Folic Acid for it.
ptcrn~ I hated the HSG too, though I didn't pass out. And I had to have two within 6 months because my first doctor was an ass and didn't write down what he saw or what really happened so RE didn't know anything and had to do it again. Sorry it hurt you so bad.
skb~ That sucks that they didn't test for it to begin with. I wonder why they didn't test your DH for it. My RE tested for that one at the first visit with my DH. And the only reason I knew this is because it is the one test my insurance wouldn't pay for.