Hi there.....I would definitely look into having it removed. My personal opinion is that when anything is growing, it needs to be removed. I understand your concerns about breast feeding, but as mentioned you can get info on that. Chances are it is benign, but from personal experience w/ a thyroid tumor, growing lumps can cause more problems than originally thought!! I hope this isn't your case, and let us know how you are doing. I am in the midst of getting my breast lump checked out by a specialist. I know this is a scary time. Please take care.