No heartbeat @ week 8

Hi mummies! Need help here! Currently 8 weeks pregnant now. My last scan was 5 days ago at o&g emergency cos I had light bleeding suddenly but no fetal pole during that time, doc can only see yolk sac. Went for scan yesterday again and finally fetal pole appeared but no heartbeat. Doc said fetal growth slow cos it shows only 5.7 weeks. Had anyone experiencing this before and had a successful pregnancy? I’m very worried now. The 2 weeks wait was so torturous #firsttimemom #advicepls #ivf #IVFbaby