Depo shot. share your experience with it?

I did not get my period at all on the Depo shot. I did gain A LOT of weight on it (like 20 pounds) and it made me extremely moody and totally depleted my sexual appetite (which really defeated the whole purpose if you know what I mean). Will NEVER go on it again, nor suggest that anyone get on it. I also know a girl that somehow managed to get pregnant on it.