It's pretty normal for women to have milk making tissue right up into their armpit. Some people even have extra nipples or montgomeries glands (the little raised bumps around your areola - which might produce milk too.) If the milk is not released, the milk making tissue in that area will stop making milk and go back to normal. You might try some icepacks and some panadol if it's painful. I'm not sure why your doctor was telling you horror stories about breast cancer. Did he tell you that breastfeeding is a protective factor against breast cancer?
No he didn't barb, thats comforting to know.

Thanks for the other responses girls/Jennifer good idea on the lactation consultant.. I am seeing a dr tomorrow cos I just can't seem to shake my concern now. It isn't painful at all so I don't know if that is a cause for worry but will check it out just in case.x