"i am 17, 5&#039;5 weighing 145lbs. i started the depo shot a little more than 3 months ago. the first time i received the shot, within 3 months i&#039;ve lost 9 pounds. normally i get nauseous from birth control but the only con i&#039;ve experienced was anxiety. i recently just got the second shot and the amount of anxiety attacks are ridiculous. lost my appetite for a week, lost a few pounds from that. before i took the shot, i rarely had anxiety. also, i spot once a month extremely lightly, rarely get cramps. no bad mood swings!"