got my first positive test 16DPO. (Literally how??) a little nervous of a chemical but trying to stay positive!!

I’ve been testing since 8DPO and they were all negative. I got the faintest positive on a blue dye test 12DPO but literally thought it was an indent so I discarded. I got the urge to test again this morning because my period is still late and my temps were still high, and I got another faint positive on the blue dye. I immediately went to the store and got the clear blue ones and they both came back pregnant! The lines are pretty faint though so I’m nervous about that. I’ve seen some people get dye stealers at 14DPO. But anyways, I’m praying it sticks!!!