It may be unlikely but it is not impossible. I just found the heart beat!!!! HR was 165-170 :-) 8 weeks 3 days.
I have had 3 losses, all of which were earlier than I am now although I was 11-12 weeks along when I found out about 2 of them. So hearing the heart beat tonight was such a relief I cried my eyes out. I know it does not mean we are in the clear but we are farther along than my losses.
That's great, must have been very exciting! I bought my doppler but will wait to use it until next week when I am 10 weeks, don't expect to hear it that early but worth a try.