I had a baby and breast fed but my left nipple is lighter in some places I also have a tumor in that breast, what is going on?

Breast surgeon. I assume you've had the tumor evaluated. If not you need to see a breast specialist.
Unclear. What do you mean by "tumor in the breast"? It could be a lumpy breast related to breastfeeding, a cyst, a benign growth such as a fibroadenoma or less likely breast cancer. Have the breast lump checked by your doctor. You are probably too young to have had a screening mammogram but may need one now. While you are at your doctors, ask about pap smear and vaccination for your newborn.

Related Questions

I'm 21 and I've just noticed today that when I squeeze my left nipple green pusy stuff came out. I had a baby 3 years ago and breast fed for first month?

Needs an exam . After you have a child it is pretty normal to be able to express liquid from your breast. If you are concerned though you will need to schedule a visit to have an examination done. Read more...