34 weeks and it all went downhill

I went to my appointment yesterday, feeling 100% fine and my bp was high, so they sent me to L&D; where it continued to climb and eventually went down, though my urine showed protein in it. Then when we think all is well, the entire night the baby's heart rate keeps bottoming out and a herd of people would fill the room, give me oxygen, move me, trying to get the baby's heart rate back on track. I have no idea what is going on but prayers would be appreciated to keep this baby In here for a few more weeks!