Depo-Medrol and depo shot

This shot has worked well as to not having to take pills everyday , but i waited about 6 months before i got it again usually you take it every 3 months well i had uterus lining tissue coming out of me, the dr said from the depo shot all the hormones placed in my body, i couldn't handle it and my body was losing tissue, i was bleeding off and on, somedays i would be full of energy others i would be sleepy, i started eating more, after taking this a year i have gained about 15 pounds, i quit taking it nov. and still have yet to have a period!!!!