I use glow for my calender for marking my periods and it is usually spot on. But, this month I am almost a week and a half off. I have taken a pregnancy test just to make sure and it cane out negative. Lately, I have been having sharp pains in abdomen area, dizzy, headaches and bloating, but no period. Should I wait it out becuase im being too paranoid or, should I take a trip to the docs ? Advice?