patiently waiting STILL

So, I'm waiting on either a period this month or a positive pregnancy test. It is driving me completely insane.
I'm not even totally sure when I had my December period, I could have sworn it was mid December, maybe a few days before the 15th because I remember thinking that  was almost back to my pre-pregnancy cycle. But my friend who had hers at the same time said hers started on the 3rd. It's so confusing! 
I'm just irritated. I want to either get my awful period or get a positive HPT, (home pregnancy test), because I can't stand not knowing!! 
ugh!!