Bled for two days started three days early usually im a full 6 days and 26-28 cycle im having nausea cramps a little and back aches not really wanting much food and heartburn i took pregnancy test its negative. im tired and my stomach feel full?

Irregular menstrual periods are common. The fluctuations of estrogen and progesterone can be easily affected by stress, weight gain/loss, exercise, lack of sleep, thyroid problems, and uterine issues such as adenomyosis or fibroids. If your period irregularities persist, talk to your Dr about what testing can be done to determine the cause. Always use contraceptives to prevent pregnancy.