birth control
"I have been on this product for 2 years now. Its very very effective. It is the only form of birth control I've used for two years and no babies. The downfalls are: mood swings a week before period begins (unreasonably sad with no reasons whatsoever), irregular bleeding (no idea when it will come,  brown at beginning then heavy), long lasting periods (like a month), and when it was inserted my doctor hit a vital nerve causing me to faint. Ever since the implanted area has nerve damage and can cause my arm to go numb if I hold it in a certain position. I can also feel my nerve damage whenever I'm on my period (maybe the hormone interacting with my nerves)."