HCG LEVELS

Bryony

I have recently had a positive pregnancy test from icsi. Last Monday my Hcg was 25, this monday 724 today ive been back today for bloods and it was 991. Because this hasnt doubled they are saying i will miscarry or it could be ectopic?! Has anyone else experience anything similar i have a scan monday but i literally feel devastated. I have no sharp pains or anything pointing to an ectopic pregnancy.