No line progression :-/

Je

Ladies I’m thinking I’m going to lose this baby. 13 dpo on top and 16 dpo on bottom 😢 it’s almost fainter now but the pictures were taken in different lighting. No sign on AF. Three days late. What do I do? Ride it out? Call my doctor? I’ve never had an experience like this before. Anyone have really light tests that never got darker that didn’t result in a loss?? Do I have any hope?!