@MintMilano The experience is different for each woman who has Implanon & may be random. One woman may get no bleeding, some might get spotting from time to time & others may get a lot of bleeding. Is she still protected? YES Implanon is 99.9% effective even if bleeding is experienced.
@veryelle Mirena is a great option for a lot of people. It's more than 99% effective & once it's inserted you can forget about it for five years! For most people it will lighten periods & many will get no bleeding at all. The most common unwanted side effect is probably irregular bleeding, followed by hormonal effects (bloating, skin or mood disturbances) though this is less common because the dose is so low.
Check out the Family Planning Fact Sheet for more info