baby heart racing

Lindsey • 29. Married. Momma to a 11yr old son & 2yr old daughter. Baby due April 2020. 🤰
I went for my checkup today and after doing the NST my doctor found that my daughters heart is racing. I have to go to the hospital tomorrow for another NST, EKG, ultrasound, and bloodwork. Anyone else have this issue? What was the outcome??