Am I worrying over nothing?

Aimee
I got my first BFP 7 days ago. I took two tests, one pink dye and one digital. (Dye showed a slightly faint line and the digi said 'pregnant 1-2 weeks).
I've been thinking most days about doing another test just to check - as silly as that may sound!! This morning i caved in and took another test..
I got a very faint line. Which i think is a BFP? But shouldn't the line be much darker..? 
I dont know if i'm worrying over nothing. Just thought i'd ask you opinions.. Xx