I was 9 days late a couple of months ago, and absolutely convinced that I was pregnant. Tested and tested and they all came back negative. Then one day, bam! Period. And now I'm for real actually pregnant, and honestly, I don't feel that much different from my false alarm...
But good luck! I hope you get the answer you're looking for. :) Relax and test again in a few days.
those all sound like symptoms to me. I took my pregnancy test 10 days after my missed period and got a positive result. But the only thing I can recommend is waiting a few more days and then trying another home pregnancy test.
Chill. Just wait it out and retest in a week using your first morning pee and if your still expecting a period then call your dr back to schedule a pregnancy test.
Also sometimes things just affect your period like sex, stress, or the obvious pregnancy! But like i said just relax and wait it out.