Re: it's there....
I would go ahead and call your OB to schedule an appointment - they probably won't see you until 8 weeks, but it never hurts to ask! I had two losses before conceiving DS2... mine were caused by my own health problems, so my midwife sees me earlier. Was your miscarriage caused by health problems (yours)? If not, they'll probably wait until the normal timeframe to see you.
Trying-to-stay-sane mama to four boys (5/07, 10/09, 7/11, and 11/12)