Depo "Shot"

Al
Last Year I Got The Depo Shot And My Cycle Was Normal For Like A Month, And Then I Bled From Thanksgiving Until May 1st. Literally Everyday All Day All Night. Turns Out I Have Over 40 Cysts On Both My Ovaries Causing All The Unnecessary Bleeding. My Doctor Said Its From The Depo. But I'm Just Wondering If This Happened To Anyone Else? And My Doctor Also Told Me I Haven't Been Ovulating For Over A Year. Please Respond