With my first DD my levels came back somewhere in the 20s at 13 DPOs and my doctor sent me for another blood test 4 days later and they were 80 something and then another 3 days later they were 140 something.

You need HCG of 15 and above (depending on the test you use) to get a BFP on a HPT and some people don't see a BFP, even on the sensitive ones until 12, 13 or 14 DPOs sometimes even later.

Don't stress about your levels - it sound perfectly normal to me.

Congrats again - you are definitely UTD!!! Lots of sticky vibes to you