2 days late negative clear blue digi

Marie • ttc#1 🌈👶🏽 • age 25 • engaged💍
So I am now two days late, today I took a clear blue digital and it said "not pregnant" but I've taken two test before that and they were very very very faint positives so I'm confused now, is it just a false negative from the clear blue ??? has anyone had a similar problem ?