Very Irregular Periods?? How Come?

my periods took nearly year to get back to normal after came off the depo. 1month get it light next time be 2months later so heavy be changing every hour. depends on the body really on how come back to normal cycle. doctors always sugar coat everything, but i say nothing much worry about, properly embalanced in hormons or something of it as if was anything more serious they be transfering u onto somebody else in the closest hospital so if didnt do this then nothin to worry about. goodluck