Am I pregnant???

Tuesday I took 4 pregnancy test that were all positive, 2 were the ones with 2 lines and the other 2 were digital and both said “pregnant”. Today i went out of town and stopped at Walmart for a few things and decided to get some test for reassurance. I took 2 and they are both negative. Nothing. Not even a faint line. I’m so confused and hurt. I don’t know what to do should I got to the hospital so I can just find out if I’m pregnant or not?? I don’t get it. They are not expired I checked them both.