I know that many of the ladies in here have had AF be off for several months after a miscarriage. Some of us even have longer cycles, ovulate at a different time, or have irregular cycles for a LONG time after (I hesitate to say permenantly, since we know things change constantly). I ovulate later now, after my miscarriage in July. It can be hard, but I do suggest one test to see if you are pregnant. If it is negative, you can assume that your cycles are thrown off and you might have a few more months of irregularity before seeing a pattern after the miscarriage. If it is positive, all the better.
But yeah, I had a really hard time with my D & C too. I also have a tilted uterus, but had the opposite...I bled so much they contemplated a transfusion. I think that after that, it can take even longer to get back to "normal." I hope you hang out here with us. This room is a lifesaver