I just wanted to say that my HCG levels were 2100 at 5 weeks when I had an internal U/S and they couldn't find anything. DS is 3 now. I think my levels were on the higher side too because at 6 weeks they were 22000.
I think the fact that your levels have gone up is a great thing. They are meant to double approximately every 48 hours.
I just did a google search and found a website called misdiagnosedmiscarriage. There are lots of interesting stories on it to show that every pregnancy is different. There are stories similar to yours with good outcomes. Also ones where the PG is fine and HCG hasn't doubled like it should.
I really hope everything will be fine and I have everything crossed for you
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