Anyone experiencing really fast heart rate?

Ashley β€’ Mom of βœŒπŸΌπŸŽ€ Baby #3 June 2020

I am 10 weeks pregnant and experienced a racing heart and heart palpitations today. My husband ended up taking me to the ER. When I got there they found nothing but my potassium being low and although my heart was beating fast there was no issues with my heart rhythm. They discharged me but even now my heart rate is around 120 although the pounding has stopped. This obviously really concerns me. they said it could be anxiety related as well but Is anyone else dealing with this ? HELP.