I hope I can hear some success stories. I am 6w +1 and my HCG levels are very low at 570. When I was first tested at 4w+5 I was 224 then 72 hours later went to 480 however they didnt double this last time. They were 480 and went to 570. I had a scan at 5 weeks and there was a sac. Then had another scan today and the sac had got bigger and there was a fetal pole however no heartbeat yet. Dr is preparing me for the worst and thinks I will probably miscarry. Anyone had a similar situation and delivered a healthy baby? For me this is baby no 4.