Heart rate at 6 weeks 3 days...

I had our first scan yesterday- baby looks perfect in my opinion - tech was super nice aswell!

We saw the heartbeat and everything and when I asked what's its bpm she said they don't measure that...

Which suprised me.

Anyway she sent me a little video - in a 6 second clip my baby's heart beat can be seen beating 11 times - so in a minute it should be 110 bpm.

Is this a good heartrate for a baby at 6 weeks 3 days? (confirmed, I went in saying I was 6 weeks 4 and she said it's measuring 6 weeks 3)

Or am I crazy for calculating all this and just need to calm down?? Lol