Sounds like baby’s heartbeat is too fast on Doppler?

I used my Doppler tonight which I do about once or twice a week.

Baby girls heartbeat sounded a little faster then normal. I could just be worried but has anyone experienced that and had a problem or concern? Or have been nothing at all and totally normal? I know babies heartbeat are normally faster in the womb but idk what is too fast.

I’ve been doing a little more cleaning and organizing around the house today so I could just be paranoid.

My next appointment is on Tuesday but I would hate for something to happen between now and then.

Forgot to mention I’m 28 weeks!