Hi there, I've taken several pregnancy tests where I've had 4 positive digital tests and one test positive with the lines. I've also had several negative tests. I'm very confused! My period isn't due for another 8 days! Could it be that the tests were sensitive enough to pick up some hcg at the time I took the test and not so much on the others? The tests were all the same brand. I thought maybe it was a chemical pregnancy but I got another positive last night