Faint lines not getting darker?


Hey ladies so I’ve been testing for two weeks and I keep getting faint lines on all tests I’ve taken including first response, blue dye, and little strip cheapies EXCEPT the dollar tests and digitals. Those are all negative. Went to the doc and said my blood test was negative. My lines are not getting darker but are still there. What does this mean? Af is due today but have no sign of it coming. Doc said to wait two weeks to see if I get it and if not to come back. I’m so confused as to whether I’m pregnant or not. Could these be false positives? All the positives are not evap lines because they show up right away. Just wanna know if I’m actually pregnant or not. Grrrr it’s so frustrating.