Hi, I have had the Implanon implant for 2 1/2 years so I am familiar with that type. However I think being on for 6 weeks at a time sounds like something's wrong, it could be random blood spotting which happens to some people - that may be why the doctor said it was OK. But bottom line is that it's your body, if you're not happy with a treatment then you should get it revised or changed. Don't let them make you feel like you're making a fuss like I have experienced, afterall we support the NHS through tax, it's not like they're doing us a favour by treating us!