Early hcg not doubling!

TS

Anyone have success stories w/ non-doubling if their hcg?

My numbers: 48 hours apart

15 DPO hcg - 113

17 DPO hcg - 132

Trying not to freak out here! It’s barely an increase at all! No bleeding. Some cramps but not new. Oh and I’m 3w 6d based on 1st day of last period.

Thanks in advance!