Leftover hcg or rainbow baby?

Hi yall!

I had a dnc on Aug 27th at 13 weeks. That was 3 weeks 4 days ago.

My pregnancy symptoms went away immediately and then 1 week ago I started the nausea and headaches again..

I got blood work done and my hcg was 37.5. And according to lots of sites on google, if I were 3 weeks pregnant like I'm feeling..the hcg range is between 20 and 50. So I'm right where it should be if I were pregnant!

Now I know it's possible that I could still have hcg left in me from the pregnancy but I'm hoping for stories of anyone who's been in a similar situation as me! I have the second round of hcg blood test Friday and I'll know for sure!

What do yall think?