birth control
"When I first started getting the shot. I bled for 3 months. After that I get my normal  period every 3 months now. I gained weight the first couple shots but now on my second year of getting them I lost weight and maintain it easily. This method ended up working really well for me even though at first it was rough. It also decreased my period cramps. Wish I didn't have to switch after 2 years."