I was told that anywhere between 90-110 was "normal" for 6-7 weeks, and then normal was 110-170. Maybe its a little low since you are over 7 weeks, but I wouldnt worry too much about it (ha! I know that is way easier said than done). Did the baby measure 7 weeks , 3 days? Because if you are even a little bit off on your days, it could be that your baby has has a totally normal heart rate (even on the high side.)
Here's a bunch of ladies talking about their baby's heartrate at 7 weeks:
I hope you get to stay. You were in my last DDC, and I like seeing familiar faces.