Any Ideas?

Olivia

So I’m on day 48 of my cycle and having nausea in the car and when I go to bed. I took a clear blue 6 day early test and I thought I saw a shadow, and a clear blue digital it said “not pregnant”. Out of curiosity I took apart the digital and I found a faint line. Anyone have this happen before? And do you think it was picking up on my natural HGC level?