Hello, I was just wondering if anyone out there knows anything about the long term use of Depo-Provera Contraceptive. I have been using it for a few years now, and have no plans of stopping using it anytime soon, as I am in college and will be for quite some time to come. I know that I am putting myself at risk for Osteoporosis by using it for a long time. But what I don't know is considering the fact that since being on Depo, I have had pretty much no menstrual cycle for a very long time. I was never really regular with my period before going on the Depo, either. Could I be somehow harming my reproductive system by being without a period for so long? I know that I definately want to have children in the future, and I would be very upset if I had inadvertently made it harder for myself to have my own children.