phase, what phase?

I wish I knew where I was in my cycle! my hubby and I have been TTC for 17 months. Dec. 12th i finally had my first regular period. and Ya! we got pregnant....for a bit. i had my second m/c. I had an U/S on feb2, and they couldn't find a baby or anything, so it was passed off as a M/C. however i kept on bleeding and cramping then lightly spotting and cramping. this went on until feb15 when i actually did officially have the M/C. but here's the thing.... I spot one day the next it's completly clear, then the next it's full on AF. then the next nothing, then outta the blue i'm cramping so bad I can't walk. that was yesterday, today I feel fine. the last time i M/C I was physically back to normal after two weeks. this is going on one month, and there doesn't seem to be any end in sight. I have an appt. with a specialist in two weeks and I'm terrified that all of this will mess up whatever he's gonna wanna do for me. it took months to get this appt! i wish things would get back to normal so we can start trying again!