Possibly miscarrying

Elissa
Ugh!!! I have been spotting pink since I found out. But my HCG results went from 362 to 631 to 1652 then to 1922. I have had bright red spotting the past two nights. Last week they didn't see the baby on ultrasound and Tuesday night they saw a gestational sac. But those HCG result aren't showing a viable pregnancy (according to research on the Internet). Now I'm just waiting to see if an HCG will be done today. 
This is the worst feeling ever.