Is this fetal heart rate normal?

My baby's heart rate is right about 175 and I'm 9weeks and 2 days. Does that seem fast? Any theories on why, if so?

I bought my own doppler and did a bunch of research on how to find/recognize baby's heart rate. It was really hard at first but I've been fortunate to find it each time (with patience).

I don't trust the BPM on the doppler so I recorded the heart rate an calculated the BPM on my own with a metronome. It's been the same every time I've checked it, the first time being when I was 8 weeks and 6 days.

Thoughts?