Lisa,
sorry to hear of your sad news...I had a complete miscarriage too on the 23rd November, and bleeding only lasted 3 days or so, I didnt have a period, but started to feel 'funny' again in December so did a test and it was positive. Had an early scan to make sure that it wasn't a false positive due to the m/c, but it wasn't - basically they have calculated my conception date to the 28th November (which may mot be exact as no period) The hospital advised me that after a m/c you are extra fertile, and conceiving straight after a m/c will have no impact on this pregnancy at all. Everyone gives you so much different advice, but you have to do what feels right for you, maybe I was just lucky, who knows, but I thought I'd let you know that it can work (i wasn't expecting to conceive straight away, so maybe the 'no pressure' helped!
Lots of luck and keep me posted, Natasha xxx