I cannot offer you any advice based on personal experience with depo, but I can tell you that after lots of reading, it's quite common for someone who has used depo (though I'm only familiar with depo provera) to sometimes take 1-2 years before ovulating and having a period again. It can be very frustrating when you're trying to get pregnant. Get on Walmarts website or Amazon and order yourself a copy of "Taking Charge of Your Fertility" by Toni Weschler. It's VERY informative whether you're trying to have a baby, or trying not to have a baby and covers such things as what to expect from your cycle after hormonal BC. I think charting (which she discusses in the book) would be very helpful for you.