I hear cancer comes with weight loss, I have not had any weight loss at all. I am 71. One year ago I could feel a tiny lump in my breast, was sometimes painful when touched. Doc had me do a mammogram and nothing was found. It still hurts a little on and off when touched, the lump is a little larger, but is now flat instead of round. Very rarely I get pain in my arm pit, but I assume it is arthritis since the whole shoulder joint sometimes hurts. There is no family history of breast cancer. What do you think?