I'm so confused!

So AF is due tomorrow and I took a test yesterday 1/28 with my FMU and i had vvvfl! I was so excited and I couldn't believe that I finally got my two pink lines! I went to Facey yesterday on my lunch break to get a urine test so I can confirm it, and of course, it was negative. I took another test this morning 1/29 and it was negative. I can't even see the slighted of a test line. I'm so discouraged. I don't know what to think now.