A lump, following breast surgery is either scarring or a hematoma (blood collection)and neither are dangerous.Your Surgeon is right,telling you that this is normal,but if he/she did not examine the lump,then you should have it checked out,particularly if the lump is increasing in size or show signs of redness or irritation that could indicate an infection.
If your surgeon,after examining you, thinks you are healing well,then try not to worry.... Eventually the hardness will soften and the lump will reabsorb.Be patient because it could take quite a while to have the lump completely gone.
Thanks for responding, Zouzi. My surgeon did examine the lump and believes it's collagen deposits or subcutaneous tissue growing. I feel that my body's trying to grow a new breast and is getting the wrong place and the wrong shape! He said the entire surgical area will change dramatically in the next 10 months and that if I'm not happy with the way it looks then, I can have it "re-excised." That's not high on my list of things to do! Does anyone think I should start massaging it?
Yes, if your surgeon also advises you to do so, applying warm compresses and gently massaging the area with a mild lotion could really help.