Depo-Provera
"I've had two shots already, and so far it's been almost perfect. I actually switched to this because I'm slightly underweight and I've heard many stories about women gaining weight on the shot, so I switched in hopes that I would. So far I haven't noticed any significant weight gain, the only side effects I've had are headaches for about the first week after getting the shot and I started getting acne on my face. I've never had acne, so this was kind of disappointing for me. It's nice not having to remember to take a pill every day and my periods are already almost non-existent. Plus my insurance covers this so the prescription is free and there's no fee when I go to get the shot!"