Am I just getting indents?

I took the pregmate test 2 days ago and the FRER this morning along with a pregmate (not pictured) (all taken at 5mm)

Pregmate from Saturday morning and there’s def a line and others saw it too.

And then the FRER from this morning which of all the pictures I took this is the only one you can kind of see something

I assumed if it was a true positive that I’d definitely have a more noticeable line after two days? What gives?