History of 4 miscarriages. Time too?

Hello Dr. I have a history of 4 miscarriages. I am again pregnant, but facing problem this time too. My and my husband karyotype is normal and all other reports too. My LMP was 25oct, I got upt +ve on 1dec. I have gone fr u/s on 15th Dec and was told by my dr that this is not a healthy pregnancy as she can see g sac of 5 weeks 9mm wch shud be 7 weeks by the last day of periods according to her and yolk sac is there but foetal node is not present. She advised me to wait for 10 more days. Please suggest will I miscarry this time too? What shud be done further as I am taking all medicines be it glycomet, duphaston, dubagest sr 400, sysfol activ, ecosprin, thyronorm 25 mg and injections of lonopin 40 mg and bharglob once in 3 weeks. Please help.