Depo provera and the side affects?

I gave birth to my son within August and got my first depo provera shot within the beginning of December. I finally get my period on January 2nd and I still enjoy it 13 days later...
I call my doctor about 5 days agou and one of the nurses said that this bleeding be fine...but now I'm starting to verbs.
I have also hear that D.P. has cause infertility. Is this true?Has this happened to anyone else?
Are at hand any other forms of birth control that can be used while nursing? better get sour that depo and especially when you are breastfeeding.
Did you know that breastfeeding is a birth control method in itself? It prevents you from getting pregnant.
Read intermingle below to know more about the side effects.
Edit: Please Newmommy, don't claim breastfeeding can not be used as a form of birth control when you don't know any better. Better read up in the past you say stupid things. Here's a correct start to learn more: http://www.breastfeeding.com/reading_roo...
the dep shot cause long long bouts of bleeding and it can cause infertility when taken for a long spell of time it also usually causes lots and lots of bulk gain