I had a lumpectomy to remove a small grade 1 tubular tumour in my right breast in December last year and the first lymph node was removed too, this was followed by 4 weeks of radiotherapy.   All went well. I am now taking Letrozole for 5 years. Every day I experience some kind of ache/pain/discomfort in that breast; it's not constant and it's not so bad it requires pain killers, it just seems there to remind me. Sometimes it's a throbbing pain in my whole breast, sometimes it's a pinching feeling under my arm and sometimes it's an ache. I have small breasts but the one that was operated on is still slightly larger than the other one, nearly 8 months after my operation.  Anyone else experience this?