What’s normal bpm for 16 weeks ?

Gabby • 90% loaded ..... 2 more weeks 🤪💖

I read on google the average is 120-160 bpm for 16 weeks and it was 136 just now when I checked. I was a little worried though cause the last couple times a few weeks back when I used it it literally sounded like a train or horse running, now it was more slow ... I have an appt coming up in a few days but I was just looking for some reassurance .