My doctor said anything between 120 and 170 is normal for a baby's heartbeat
thats really good, my bub's heartbeat was 134 at 7 weeks.
My son has been 150s every time. Once it was 140 and I asked if that was normal, she said 120-180 is considered normal, so you're good!
My first daughter stayed in the 150's and my baby now is in the 150's... Normal
It's perfect. All 4 of mine have been in the 150's.