my lines aren’t darkening

My lines aren’t getting darker:( they aren’t any lighter, but i know they should be darker by now. got my first positive day 11/12 dpo and today is 13/14 dpo. i know i need to have my beta hcg checked, and of course, it’s a holiday weekend so my doctor’s office is until tuesday. I don’t think urgent care check it, correct?

Here are the tests. Bottom one is this AM so still wet. Others are dried from days 11/12 and 12/13.

This is heart breaking. I guess I just have to call them tuesday if i make it that far.