Ugh! I had a friend who went on the depo birth control. She was on it for like 3-6 months. When it was time to replace it she wanted to go back to the one she had before so of course she went to the doctors office and they weighed her and what not. She comes back to work upset that she's gained some weight. A few days later its about 11:30 am and we break for lunch at 12pm. In 30 minutes she inhales a snickers bar, a 3 musketeers bar, and a bag of chips then proceeds to eat lunch too. I got after her the days that followed (she was trying to lose weight) but was completely convinced that the weight gain was from the depo alone and because she was switching BC's the weight was going to magically disappear.