Hcg not doubling?

Francesca

So I went to the Dr Monday after having some bleeding on Sunday. I woke up to a fair amount of blood, but then no bleeding after that.

Saw a Sac measuring the right size (6w5d) and had blood drawn.

Monday hcg was 65k

Wednesday (7w) was 85k

They're having me come in Monday for another ultrasound for a more definitive answer. Anyone else had their levels not double and been okay?