Darekening tests?

So I see lots of people on here take tests to make sure the tests are getting darker. So I did that and my test aren’t getting darker and it’s freaking me out lol. Should it be getting darker?

These are my tests based on my last period I’m about 4 weeks plus 5 days. I haven’t booked an appointment to see my doctor yet I was hoping to wait until 6 weeks before I go.

Top pictures is from yesterday.