Hi, about a week after my last period I got a mid cycle period unexpectedly. It last 4 day and ran a normal heavy to light pattern with enough cramps that I needed medicine 2 of the four days. Then when I was expecting my period to come, it never came. It still hasn t arrived. I have taken 3 pregnancy tests and have ruled that out an an option. Lately my stomach has seemed to feel blown up, like a balloon, but not to a point that my clothes don t fit. I have had headaches the past few days, but I think that is due to dehydration. Everywhere I read ovarian cancer keeps popping up and it scares me. Any help?