Pregnancy test

Mmkay kids, I really hate to bug you all with this but over the course of two days, four tests, and two different brands I'm starting to wonder if there's a positive result or if I'm just crazy. I just lost my job so I don't have health insurance atm or I would just schedule an appointment. The lines seem even more faint in the pictures but yesterday I stumbled across the term "evap line" so maybe that's what those faint marks are? I guess I should also add that my period is a week late.