Line progression??

El

My tests aren’t getting lighter and they HAVE gotten darker but it’s so slow. By contrast, my FRERs got darker every day until 13DPO (I ran out of them, I’m getting more today) and I’m 16 DPO now.

How do I know if I’m having a chemical? Do the lines get lighter or just stop getting darker? I’m so nervous

Strip tests through 10-16DPO:

FRER 10-13 DPO:

Thank you!!!