Scared about Hcg level

peaches • Mom of 7 miscarried#8 was due May '19 rainbow baby due June 2020

So far my levels were doing well. But I had it done last week 2 days after the other was done and it only went from 11,392 to 11,502. Just wondering if anyone else had the same thing happen and had a successful pregnancy or should I just start preparing myself for the worse