Sorry to hear about your miscarriage. It is a very sad natural process. I also had to wait a long time to get my period. I miscarried the beginning of Oct 06, had the D&C 3 weeks later, and did not get my period til mid March this year (about 20 weeks). It was a long wait.
I went to the doctor at 10 weeks and she told me to wait a little longer. I kept on doing pregnancy tests and worrying that something was wrong.
At around 20 weeks later I went to the doctor and she wrote me a prescription to get some tests done. However that night I'd a little bleeding and the next day I got my period!! Crazy eh...(My periods gone straight back to its normal 29day cycle.)
Hopefully you do not have to wait as long as I did for your period. My doctor said it wasn't common to have to wait so long for the first period, but every womans body is different. Maybe if you are worried, go see you doctor and see what she says.
Will keep you & all you strong women in my prayers...