Is there a second line or am i crazy?!

Lorna • Sun, Feb 03

This was taken at exactly 3 minutes. I'm 18 dpo with no sign of af and i'm SUPER regular, and no symptoms other than i'm incredibly tired, nauseous at random times, my lower back is achy and there's some tingling in my belly. I took my first test yesterday afternoon and got a bfn but took this this morning?