Hcg did not double... But they went up... Any hope?

Just had my second hcg today and the numbers did not double. Nurse told me to look out for signs of an ectopic pregnancy (which I have had before) but this feels different. Please anyone share stories about the numbers not climbing as expected but still having a healthy child. I need something positive to hold on to right now. I go back Friday morning to have another hcg test. Praying the numbers jump!