Ok so last month I started my period on the 12th over the past week I have started experiencing mild cramps in my lower abdomen and I feel like I'm going to start my period but it still hasn't came I am also noticing that I am drinking more, falling asleep more often (car rides,work,watching tv) and I am peeing a lot more and it isn't just a couple drops it's a good amount I also am getting headaches and nausea has anyone ever experienced this ?? Do you have any idea what this means?