birth control
"I've been on Implanon for 18 month now and booking for removal next week. I must admit! The convenience is awesome! Not have to worry about pills, antibiotics affecting your pill or really anything to do with inconveniencing myself was pretty spectacular! 
Cons: some spotting first 3 months
Pros: super cheap, super effective, super convenient!
I really thought I'd last till end of my third year and perhaps get another one but last few months I had 2 weeks periods every month. Gained 15lbs. Not much sex drive. I want to go back to Ortho Tri-Cyclen!"