I am 29 and every once and a while I notice a greyish/whiteish/yellowish thick discharge from my left nipple. I have talked to my ob/gyn about it and every time I'm there, she can't see anything wrong. I have had a breast cancer scare once before but it was on my right breast. I have also had pre-cancerious leasons on my cervix... could there be a connection between the other cancer scares and the new development of discharge from my left nipple? Or could it be some kind of infected pore. My nipples are constantly very sore too.. any insight?