I am currently two weeks late my period I took two pregnancy tests and came up negative. My breast hurt, I ve bad mood swings, dizzy, never have any energy, cramping. My periods have became irregular since I started a relationship with my partner in November 2014 would it be something to do with him? Before then it used to be like clockwork, the scare of being pregnant is getting old. endremesosis runs in my family and I m just wondering would it be pregnancy that is the reason why my periods are all over the place or would it be endremesosis?