I think I’m pregnant, but the tests disagree...

Alex

So I have been having periods like clockwork for about ten years now and all of a sudden... late. I have taken three pregnancy tests over the past three mornings and all are coming back negative. I don’t understand what’s going on here. Has anyone else ever had this happen? How did it turn out? Pregnant or not pregnant? So far I am on day 3 of no period. I’m not super stressed and I haven’t been sick. I have never missed a period before...