Has anyone else had one; that failed one day then passed the next?

I posted earlier, yesterday now, about not feeling the baby move. I called my doctor and they said I need to feel 10 kicks in 2 hours after I drink something really sugary. I drank Dr. Pepper and waited. I felt her kick 3-5 times. I decided to go ahead and come to L&D where they hooked me up to monitors. According to the monitor, the baby is moving like crazy, then I went for my ultrasound and the baby didn’t move the whole time I was there, 30 minutes. We ended up failing the test with a 4/8 and are being kept for observation overnight and a repeat tomorrow.🤦🏻‍♀️