One of the reasons Drs give for waiting a few cycles is that the uterus has not had time to renourish itself after a m/c. Maybe this is why it didn't work, perhaps your lining was too thin and the embryo didn't have enough to grab on.
After some testing we foudn out that I have something called MTHFR - a clotting issue that may have been the reson for my first m/c. If you had had 3+ miscarriages, your Dr. should look into this possibility.
Good luck and I hope everything is OK!
Most Dr's will start testing ater 2 now-FM if you want a list of tests for recurrent preg. loss. I'm sorry I know all too well how this feels
