@Lauren could be numerous different reasons. If your OB didn’t mention concerns, I wouldn’t worry about it.
Typical fetal heart rates range from 110 to 160 bpm. In early pregnancy, it tends to be a little faster, then settles as the baby grows. It’s also influenced by what both mom and baby are doing. I wouldn’t worry, X
At 6 weeks the heartbeats of my baby were 160 and now I am almost 20 weeks and they are stabilised. So don’t worry, is normal
Your nerves can influence the babies heart rate so as it was your first scan you were probably just nervous/ excited which will have caused babies heart rate to raise slightly also but if they didn’t mention any concerns at the scan I wouldn’t worry 🫶🏼
@Sam I meant to say high not low lol but yes this is the info I saw too. I wonder why my baby’s heart rate is so high