Baby’s heart rate at 9wks

Pa

At my ob/gyn appointment on Tuesday my baby’s heart rate was at 172bpm and at the ER Wednesday night the doctor did an ultrasound and didn’t measure heart ratebut estimated it at 140-150bpm. (I was at the ER because of a car accident and they said baby and I were okay)

With this whole heart rate thing being very different, is that normal???