I was spotting the 14th-20th, my period usually comes the end of the month but it didnt. on march 6th i was spotting and cramping but no period. i took a pregnancy test today 3/16/21 and it was negative. im having symptoms, help?

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 endometriosis 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.