birth control
"My experience with Implanon has been a good one. All the mishaps I've had were things I'd been warned about by my doctor.
Negativs: Bled for the first three weeks, sporadically spot (particularly when I gain a few pounds), a little loss of sex drive
Positives: Simple, easy, effective

I'll elaborate a bit on the negatives. After the first three weeks I stopped having a period for about 4 months. During this time I lost about 10 pounds (not because of the birth control but because I was trying to). Whenever I go over around 130 I become susceptible to spotting. With the sex drive, I would assume not having the hormone boost during menstration is to blame. Sex is still good and I still want it, it's just a little change."