Secondary Amenorrhea

Hi everyone! I am not sure if you are all still coming onto this site as I know it was a few years ago you were all posting about this but I thought I'd give this a try.  I am 31 years old and have been diagnosed with secondary Amenorrhea.  For the past 4 years or so I have taken my microgestin bc pill continuously w/out allowing myself to get a period...this was "ok" per my previous obgyn. I went off bc in June of 2010 and as soon as I got off bc, I got a regular 7 day period and have not gotten a period since. My Dr. is putting me on Estradiol 2mg for 35 days and on the 25th day she's having me add Prometrium 400mg for 10 days. I have already tried Prometrium 200mg for 10 days and that didn't induce a period. I am wondering if any of you have had experience with this and also for those of you who have tried Prometrium and any other meds such as Estradoil what your results have been?  I hope all of you are on regular cycles now and have been able to conceive if that's what you were hoping for!  :0)  I greatly appreciate any help/advice!  :0)