Im 5 weeks pregnant with 4 prior miscarraiges including 1 IVF and IUI. My first hcg level was 820 and 2 days later 1697,my levels never went above 80 ever so im hoping this time is for real,im a little crampy and it makes me nervous ,i go back tom to check levels again and u/s. would there be a heartbeat at this stage? and where should my levels be 4 days later?