The chances of you getting pregnant after taking depo for 9 months are slim to none if you have been getting your shots on time. I took depo for years and it is one of the strongest methods of birth control on the market today. It is so strong that it makes most women not even have a period, which was the case with me most of the time, sometimes I would have spotting. My doctor told me that most women can't usually even get pregnant until 1 year after there last shot of depo, which was the exact case with my sister-in-law. It took exactly one year for them to get pregnant after her last shot.I hope this helps answer your question.