I was playing around with mine just seeing if I could find anything

I got numbers multiple times ranging from 120-170, it would stay for a few seconds then shoot back down to 30-70. But when I “found” the high numbers there was no sound.

Was it just some weird thing?

I’m not worried at all, 11 weeks so I know dopplers can be wonky and all, just curious as to why I got high numbers with no sound

Any ideas?