17 years ago I had a cancerous lump removed from my left breast and was then given chemo and radio therapy. Everything seemed to have gone to plan. I have not had a mammogram for at least 10 years and all seemed fine. Since about 3 weeks ago I have noticed an odd pain in that same breast, which seems to come and go, mostly on touch. It feels almost like a nerve pain but it feels deeper than just on the skin. I cannot feel a lump and I cannot bring the pain on; it just happens several time a day. I doubt that a physical examination would reveal anything as the pain comes on sporadically. Any suggestions?