"i received my injection on july 29, 2015. i was on my last day of my period and since then i have only had mild spotting. i experienced some pain on the injection site that went away after a couple days to a week. very few mood swings. i gained six pounds since then. i am considering not going in for the second injection because i fear i will gain more weight and have worse side effects. also you are expected to take calcium supplements since it sucks the vitamin d and/or calcium out of you. which is hard for me because if i wanted to take a pill everyday i would have just got that. i have had a pleasant experience on depo but i am worried about the future."