Line Progression...worried

Lux • Thu, May 09

So I’m 4w4d today. I’ve been taking tests everyday (I know, I know) and my line is definitely getting lighter. With my previous 2 pregnancies (which resulted in 2 healthy babies) my line continued to get darker as you would expect. I’m panicking. This looks bad, right? Has anyone ever had this happen and everything was ok?

These tests are from 15dpo, 16dpo and 17dpo (today).