Megsmum
so sorry to hear of your loss- its just not fair!
I had a missed m/c 6 weeks ago at 12 weeks as well.

my body went straight back to normal and i am just about to have a IVF tranfer on Monday so I know that i am ovulating again properly. I have a normal sized follie and thick lining and this is only my second cycle since my m/c.
everyone is different I guess- but you definately ovulate first and then get AF- its just waiting for ovulation to kick back in.
HTH and good luck!!!
odette