So I took a blue dye test one of the 20 I’ve already taken my period is 8 days late An it had a faint positive I took the test in the afternoon , it’s a think line is it the evap line , I also took a test 5 mins ago with morning pee An it looks to be negative. Why is my period so late then ?? Anyone eles have this problem ?

Positive looking test with afternoon pee when I first checked it was negative then 2 hours later looks positive.

Morning pee test .