Ok so I'm 20 days late on my period. A week ago I took one test, said negative, then the next one I took no result pulled up on it until a couple hours later I looked in the trash and it had lines on it indicating I was pregnant, so I've taken 4 more after that one and they all keep coming up negative, I go to the dr this fri to get blood work done, but I'm confused.... This is the photo of the test