I'm on the contraceptive implant, I have been for over two years iv always had discharge from my left boob it's never been a problem and I saw my doctor to make sure and was reassured its doing no harm and said it has no proven link to m implant although the arm implant releases a pregnancy hormon that makes my body think its pregnant and not give out any more eggs any way i have recently grown almost two cup sizes over two days my nipples are sore I took a pregnancy test just in case as I can't tell from missing a period because I don't really get them just every six months or so no idea why never questiond it so I'm not pregnant . Thank you for your help :]