This really stinks:-(

So I got a very faint line on 99 cent test had my Beta done and it was less than 5.0 mlu/mL so it's negative so confused. Another confusing thing is i tested trigger shot completely had a few days of negatives until the faint line this morning My phone doesn't take good pic so it kinda hard to see in this pic

Has this happened to anyone else and turned out to be pregnant