Faint lines?

So I took a pregnancy test four days ago (bottom) because I missed my period by almost a month now and it had a very faint line so I retook it again today (top one) and I can’t tell if there’s a line or not.. if there is should I still retest because I feel like if it’s been a month the tests should’ve been more obvious..

The blue dye also created a horizontal line which shouldn’t happen?