Positive then negative test

Katie

Hi all. I took an early response test yesterday morning and got a positive (top test). I then took another this morning and its very negative (bottom test). I’m due for my period tomorrow so I know I just need to be patient, but I was really hoping for that positive this morning. Is it possible that the test today was wrong? (I know yesterday’s could also very well be wrong... just trying not to think about it) has this happened to anyone to where it turned out you were pregnant after all? thank you!