evaporation line or no??

I took a pregnancy test today and when.I.did it has just that 1line.I came.back.in.there to pee and didn't want my bc to see the packet and now there is a faint line I think.it's an.evaporation line... I can't post a pick bc my bf used my phone.and he's at work and his is shattered...so what.do.u guys think?