Take a digital one

I'd recommend sticking with the same brand to see if there is a difference. Different brands test for different amounts so it could be confusing in early pregnancy. Also blue dyes can give terrible evaps and the last test looks dry. Is the first one tweaked? Go and get a first response which tests for much less hcg than the tests you have here. If you get even a faint line that shows up within 3 min then you have a bfp. Baby dust and definitely update us😊

The last one is dry so you'll have to retest.

The middle one could have been a faulty test. The third test the second line was there, right? 

Take a digi! The Clearblue Weeks Estimator will be really sensitive and give you a clear answer.