Faint line plus digital saying Not Pregnant.

Is it just me or is it too early for a digital tests? 1st I used a dollar store test and after 7-10 mins a faint line showd up. Right after that I took a digital test which says NOT PREG! :( Is it still too early since I'm Only 8dpo? Or is it because they're 2 different tests, or am I just losing it?? Lol plzzz help.