One week late but BFN...

Trena
Well, I took a test when I was 4 days late, negative. And I took a test again at one week late, still negative.
​I have been having a regular period for so long now, and I'm NO more stressed than usual and have had no lifestyle changes...I don't understand.
​Usually my cramps are excruciating days before I get my period, but I've only been having mild cramps for two days. They have been getting a LITTLE stronger I think, but really short...
​I know I'm not out yet until I start, but I'm just so upset... What do I do?