You had a light period for 2 days then 4 positive test on different days and now a negative test you dont understand What is going on are you pregnant or not?

It depends on what test u used. you might have to research the accuracy of the tests you took. if u r using different tests on different days, then one of the tests is off if you got different results. if you aren't interested in doing any research, just stay on a healthy diet, and see if your stomach blows up like a balloon.