It can take upto 3mths, i had the implanon and didnt get my period for 3mths after it was taken out, my sister was 4mths after she stopped her deprovera shots
Good luck with this one. Depo shot can stay in your system for up to a year. So you may not start a period until then. All bodies are different and depends on how well your body reacts to certain medications. Depo is a really bad choice of birth control and I do not reconmend it to anybody.