birth control
"I got my first shot back in October and will not be getting another. Since the day I got the shot I have been suffering from mood swings, increased appetite (I only gained 4 lbs but it was in good places) severe cramps, bloating, and headaches during my cycle or the week right before it would come on. Many people I know who have been on the shot said that they had no period at all but everyone reacts differently to different drugs. DO AS MUCH RESEARCH AS POSSIBLE AND ASK LOTS OF QUESTIONS WITH YOU DOCTOR, AND IF NEEDED GET A SECOND OPINION."