I am supposed to be 10 week. Had a full period was 11-4-14, on 12-2-14 started a period but stopped, had a positive pregnancy test. Had a ultrasound on 1-13-15 showed I was 6 weeks 3 days pregnant, gestational sac, fetal pole but no heart beat. HCG on 1-13-15 was 17,407.0 and decreased on today to 10,943.0. Have I miscarried?