Someone please help!!!

Samah
Ok so I'm totally freaking out. I'm supposed to be around 5w2d pregnant and I went to the ER last night because I wasn't feeling too good so they checked my blood which came back 8,380 hcg beta and checked my cervix and was told its closed but the ultrasound showed nothing!!!! It showed there is no baby but a lot of free fluid.. Huh? I was told to follow up with my OB but she can't see me for another week and I'm freaking out! Did this happen to any one please I'm dying here