will this be a viable pregnancy?

ok so i have had 4 miscarrages to far this year. I had a miscarrage 11-21-12 and about 2 and a half weeks later i found out i was prego again. They started monitering my hcg levels since i am considered high risk now. First hgc my level was at 39,second one 2 days later 61,3rd one 3 days later it was 140 ,fourth one 2 days later 220,5th one 3 days later 335 and the 6th one 6 days later was 564. I am unsure as to what is going on,i have no bleeding or any kind of pain but it seems like my last one is not so good not even doubling in 6 days. I was just wondering if there was anyone that had this kind of problem and still went on to have a successful pregnacy? i have a doctors app. in 5 days and i am terrified of having another miscarrage which would make it 5 already just from this year. I hoping and praying they give me a ultrasound and find that everything is ok....