When your on the depo, one of the most common things is that it will screw with your cycle. So after you stop the depo, its almost guaranteed that it will take awhile for your body to get back to normal again.... I was on the depo shot for 8 months. It screwed with me in a lot of different ways, including my cycle. i hardly ever had a period, and if i did, it was out of nowhere. now that ive stopped the depo, i get a period every month, but its a lot heavier and not always the same time frame.... it will take a while for your body to get back to its normal cycle.