Could I be pregnant?

Last night, I took a wondfo hcg test. It was negative. An hour later, I picked the test up again and noticed an extremely faint second line. So I took another one, and 10 minutes later I saw a super faint line on that one too. I decided to try a FRER test, and it looked negative. But today I looked at it again, and there is definitely a very faint second line there. Could these all be evap lines, since I didn't see them until after the 5 minute test window? I am only 9dpo today so I realize it might be to early to know anything, but I'm really confused now.