I second that. 6-10 weeks is fairly normal. If nothing happens after that I would go in for another ultrasound.
Sorry about you loss :(
Keep you head up!
It is also possible that you could have concieved again, I didn't have a period between miscarriages as apparently you are very fertile after a mc.
Can take anywhere up to 8-9 (sometimes longer, depending on your body) for a period to arrive.
Mines came 7 weeks to the day after my miscarriage.
I had a m/c early feb too and my obstertian said it can take 4-6 weeks for the next cycle. I'm nearly five weeks and still waiting for mine too. Good Luck may 2014 be good to both of us! !