ok, well...
firstly dont have implanon (the only UK implant) if you are really bitg - i mean BMI over 35. it won't be pwoerful enough.
Secondly don't have implanon if you ever had undiagnosed heavy bleeding.
thirdly don't have it if you have a history of ovarian cysts - it will exacerbate the problem.
side effect wise there are quite a few, the main one being frequent or prolonged vaginal bleeding – which may affect a fifth of all users. But some women get no periods – and are very pleased about that!
Others include headache, spots, weight gain, breast tenderness, dizziness and depression, o and changes in level of sexual desire.
the implant is the size of a matchstick so you won't be able to feel it or anything like that.
certain drugs and st johns wort can reduce its efficacy but generally it isn't as effected by drugs as other methods are.
HTH
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