My opinion is, you should have had the biopsy back when they recommended; then at least you wouldn't have had to keep worrying about it being cancer, which I believe your're worried about, right? So why not get it biopsied and know what you're dealing with, one way or the other? Pain isn't usually associated with breast cancer, but if the lump is growing, you should definitely have it examined and do what the doctor recommends to figure out what it is, and what to do about it. Don't be scared, now - just call and make the appointment and get it over with. You'll feel better knowing. Good luck -PJH