I don’t know what to believe

So last night at about 6:00pm I decided to take a pregnancy test (Rexxall Dollar General brand) because my period has always been one day earlier than the predicted start day on glow and I haven’t started or had any of my normal symptoms of it coming and I got a very faint line (I could not for the life of me get a good pic and it is much more noticeable in person)

And then this morning at 6:00am I decided to take another one (Clear Blue) first thing and I got a BFN. I don’t know what to think or believe. I know if I don’t start my period today then I’ll take another digital and probably not use clear blue. What do you guys think??