1st prego test = very very faint line,2nd test= negative.... what is going on?

Any line faint or not is a positive. You may not have enough hormone built up in your system to get a strong positive. Take a test when you first get up that way the hormone has built up more. But i would say you're pregnant. Good luck! Get on medicaid or some kind of insurance because if you are pregnant you will have to see a dr in the next few weeks.