Ok ive been charting my cycles through a few apps. My period was due July 4-6 approximately but came on July 14 with a vengeance (however you spell it) well according to the apps I have been using it shows my period due August 12-14 but still no signs of AF making her arrival. This app shows tomorrow which is weird. But a pregnancy test showed negative. Whats going on? Ive been nauseated and peeing like crazy. My backaches are getting worse. Weird dreams its like I'm always fatigued or exhausted. I don't work so I don't know whats going on.