R.L.
I have suffered through secondary fertility twice which were some of the worst times in my life. I too had blocked tubes and hormone problems. I commend your gyn for sending you to an RE..they can do wonders. In my fertilty life I have had two HSG's and two laps, 6 failed clomid cycles, 9 medicated IUI's and 3 medicated IVF's. My second son came via IVF as did my twins. It is not easy...hang in there.
I would suggest reading.. http://www.amazon.com/Wanting-Another-Child-Secondary-Inf...
It made me feel very vaildated...