birth control
"I am 20 years old and here's my experience with this birth control. Pros: didn't get pregnant. SLIGHTLY fuller breasts in the same cup size. Didn't gain weight.  
Cons: I lost ALL sex drive and became a moody, depressive, crying, tired, sad prude. Which is sad because my husband thought I wasn't attracted to him and I am VERY attracted to his sexy handsome self! My acne also got worse. 
After two months I stopped the pills and switched to condoms. I am back to my sexual self and get along 100"