Faint line not darker, not preg clear blue?

Ally

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​So possible bfp.. yay! But I’m worried, this is today and yesterday but it hasn’t got any darker. And won’t show up on clear blue digital. Should I be worried?