"i was on depo for 13 years. zero periods in that time. i did have a bone density scan after 10 years and that checked out fine. i went off of the shot one year ago. it took me about 6 months to get a period and now it seems my body is making up for 13 years of missed ones. i have had some serious hormonal swings over the past year but overall the period is the only thing i can see that is different. i am ready to go back on depo until menopause."