Hi, I was supposed to get my period on the 13 of this month. Counting 28 days, I should have gotten it by the 13th of this month. Today is the 36th day. I know I m not pregnant. I ve had a lot of stress with moving and exams, and I ve changed my habits of eating to healthier, incorporating more fruits and veggies. I didn t even get any pms symptoms(abdominal lower pain)until yesterday. This month I haven t had any breast pain. Should I be worried?