I'm sorry to hear you're having trouble conceiving again. Your body, mind, spirit went through a lot. I miscarried in May '05 and wasn't able to get pregnant again until December '06. The wait was horrible. I grew absolutely weary of people telling me to just "relax".
Are you testing positive for ovulation? The ovulation predictor kits can be helpful. My period cycles were all over the map after I miscarried, sometimes my cycles were 21 days and others were 27 days. Ask your OBGYN to test your FSH hormone levels. Mine were marginal due to my short cycles, apparently with such a short cycle the egg didn't have enough time to mature, so even though I was testing positive on the ovulation kit, it wasn't a viable egg.
I highly recommend that you do some research and speak with your doctor about using a natural progesterone cream and/or estrogen cream to get your body back into balance. My doctor was very doubtful it would work, but I followed a 14 day program and applied natural progesterone cream for 3 months and stopped. During this 3 month period, my husband and I did NOT try to get pregnant. Maybe just the act of not trying for a while helped me mentally, but funny thing, I was pregnant after my second cycle after stopping the regime. Was it the progesterone or not? There is a LOT of controversy using progesterone cream and most of the literature I read recommended only using it for 3 months maximum. It did make me feel a lot better and my cycles were back to 28 days and very easy - no cramping or pms. Best of all, I got pregnant and I'm expecting my first child in 8 weeks.
I send happy fertile thoughts your way!