Faint line?

First Signal pregnancy test. Extremely

faint line at 10 minutes (too light to show on camera) and it got darker and darker. BFP or evap?? The first picture is about an hour after being taken and the bottom is 4 hours after. It's still very faint, but does have color. Opinions??? I'm going to take a FRER on Monday. I believe I ovulated on March 11. TIA