Natural birth control...
Alternative Lifestyles and Subcultures
Either condoms or charting...all other methods release some hormones. Just go online or find a book and read about the menstrual cycle and when/how everything happens. It'll probably all seem confusing and overwhelming at first but you'll figure it all out pretty quickly. Since you were on birth control that long and just came off of it, it may take a while for your cycle to return to "normal". Try to be patient...I was only on BC for a few months and it still took around 2 or 3 months for my cycle to be normal again.