M.I.
I had a bad run with pregnancies last year. In March I had a positive test and a week later I started bleeding (like a period) so I took another test and it was negative. I've been referring to it as a chemical pregnancy or really early miscarriage, the egg is fertilized but doesn't implant correctly. They're more common than people think because it just seems like a late period. I would take another hpt and see what it says, even if it's a dollar store test.