Babys heartbeat concerns (Home doppler)

Lib

Hiya ladies!!

So last week my home doppler arrived, we tried it and pretty much found the baby's heartbeat within seconds but the bugger kept moving. But it sounded just like a horse galloping 💕

We tried it today and we couldn't find the gallop😢

I have been experiencing pelvic pains today alongside bad hips. Which I am aware is stretching. So we thought baby might be above the pelvic bone on my right.

Last week we heard a fast paced heartbeat sound seconds before the racing horse gallop (which I know is baby). But today we just heard a fast paced heartbeat sound but not the galloping sound. Above my pelvic bone

Should I be worried or is this normal and baby might just be in awkward place?