Am I just getting my hopes up? :(

Shelby
For the past week or so about 5 days out of the week I'll be naseous during the day at some point. My back and muscles in one of my legs have also been killing me and I've been craving hotdogs(which I've never liked!!) I've also been getting headaches easier and more often then normal, but my period isn't due until the 22nd of this month. I've taken 2 tests in the last two weeks, one of them today and one last week and both have came up negative :(