I started *late* at 15, and then went on Depo (thinking that was a good thing?) at 18. Depo was bad for me. Hair loss, no libido, dysfunctional in every way you can think of, and no period (but I did manage to cramp)
After all ****in' kinds of fun, I stopped getting the shot. It was a year before I got my period again, and I was *ecstatic*. It seemed unnatural for me not to (just too pagan for my own good, I guess). The Diva is so convenient, etc, that I really don't mind/care...
so I've had my period 5 years. Yay!