Why Are My Periods Delayed Over 10 Days, Prolonged With Light Flow, And Increased Bleeding After Self-pleasure Even On The Expected Last Day?

Hi, I have been having my periods later than 10 days and when it started not much came out and it has been prolonged, my cramps occur in the middle of my periods and whenever I pleasure myself more period blood seeps out when today is supposed to be the end date of my period.