My left nipple is frequently itchy. I also have a white discharge from that nipple. I had a baby 10 months ago and only breast fed for 2 weeks. I also have had mammograms in the past for lumps that I was told were lipomas's without having had a biopsy done. I am 33 years old an don't know if I should be concerned about this or not. I don't want to bother my doctor if it's something I don't need to worry about.