Depo provera injection continuous bleeding for months?

I'm up for my 3rd depo provera injection soon and since 2 weeks after I got my first injection I enjoy been bleeding continuously (except for more or less a week and a half ending month). It's not heavy, newly a continuous spotting really but I'm getting really tired of it.
Has anyone else dealt next to this and will it go away soon? When starting on something close to depo, that can definitely start. The norm is that you stop bleeding completely on depo (no periods at all). But, this can be another side effect. It may verbs, but it gets more predictable to stop with time. It's possible that depo isn't the right birth control for you. I be on depo for two years and started having closely of bleeding before I get off of it. Once I started the pill, I didn't own any more spotting between cycles.
my daughter has have the same problem and consequently they figured out she have (pcos)poly cystic ovary syndrome