Has anything like this ever happened?!

Chelsea

I went to my 37 week appointment, He ended up doing a NST (Non Stress Test) and they didn't like the results, They told me to leave and eat something and drink a Coke or something sweet and come back, So I did, they didn't like the results again, the machine just kept beeping both times...So the dr sent me in for an ultrasound and everything looked okay but they want me to go to L&D first thing in the morning to get another stress test. Dr said his heart rate wasn't exactly where he wanted it to be. I asked him what could be the problem and he said it could be the placenta could not be working properly, or other things. Anyone experience anything like this? I'm seriously worried sick...