What Cause The Thick Clear/brownish Discharge And Itching?

I got the Implanon inserted December 28th of 2011, I had the normal side effects, irregular bleeding and what not. Six months later, it stopped like the doctor said, and everything was fine for a week but now I have very thick clear/brownish discharge (no odor at all) and I itch like crazy, Ive read forums on the internet but nothing helps? I just want to know how to get rid of it.