 [ Symptoms ] period is a week early 3 months in a row i know for sure im not pregnant should i be worried  i have been somewhat stressed and fatigued and i have started working out 3 4 times a week [ Disease ] to clarify i used to get my period every 28 days but for the last 3 months i have been getting my period every 21 days i have been somewhat stressed fatigued and started working out so hopefully these are reasons why but i am still concerned