Hi there,
I'm sure everyone has different experiences with the implant, but personally mine is a big load of hassle. I have put on weight, got greasy skin and my periods are irregular, painful and last over 2 weeks. I have had it in for 2 years and the only reason I haven't had it taken out yet is because if a bit scared of how much it is going to hurt (apparently the tissue in your arm eventually fuses around the implant - eiw!)
You may not have any of these problems, but think carefully before you get one because it might not be a magic answer like I thought it would be!