Just need some insight!

Amber

So, I told myself I wasn't going to test but I've just been feeling off. Every single test I take has a faint line. And I don't mean an indent line... I mean thick lines that have color but are SUPER faint. I'm using First Response, ClearBlue AND the dollar tests from WalMart all of which keep giving me these lines. I started testing 9DPO and today is 11DPO. Should I stop testing for a few days? Or just assume it's a chemical?