birth control
"I've been on this medication since I was 17. I'm now 25 so roughly 8 years. I was off of it for a few months also. I've never been pregnant or gained weight. They do cause sore breasts but it eventaully goes away. Only take as they prescribed. I missed a few days once and took the pills all at one time. I did have pain and bleeding. But if taken regularly and correctly I've  had a positive experience"