I was on depo for 1 year. (I'm 25 now, 23 at the depo
time) I gained 50 pounds, had terrible mood swings, depression, bone loss
, fatigue and some minor other problems. I suffer from knee/joint pain now because depo causes you to loose calcium in your bones. If you choose to go with it, make sure you start a calcuim supplament right away. I honestly would suggest researching into any drug before you commit to it. Some people I know have had really good luck with it.