Pregnancy Test Help

Every test I have had taken in the past 1 week an a half have had a really faint line on it it’s from the pee I do in the morning as I wake up an I have to take them outside to see in the sun light as my lighting inside it crap if I put a torch to it I can see it that way also, if I take any test in the afternoon the test either comes back really lighter faint line then the one in the morning or it’s negative but I go to take a digital an it says not pregnant,

I’m due for my periods today an got no signs of them

I’m not sure what is happening

I’m not sure if my eyes are playing tricks on me

Can someone please help