Faint positive with Clinical Guard?

Lauren

Took a First Response test 2 days before AF due. Test was very negative. Now 1 day late... Took Clinical Guard pregnancy test this afternoon, and here is picture. First time using CG. Tried 2 sticks in same sample and got same results.

Could this be a false positive? It’s very light, I thought it should be a little darker after AF was due?

If it is positive, that would make me 4 weeks along.