baby's heart rate

Jules

So, I just got back from an appointment and my baby's heartbeat was fast. It was at 160, usually it's 140ish. The Doctor did say it was fast but didn't seem concerned. Im 35+ 5 and the baby was pretty active during the doppler reading. Anyone come across this? I know the doctor would have said something if there was a cause for concern, but I can't stop thinking about it.