Hi bella2
Women can sadly get breast cancer at any age , though it is definitely more common in middle aged women. I am 38 and have had some similar symptoms to you like tiredness, aching arms and back pain but no lumps, though had pain in left breast and other changes.. Had appt at breast clinic and cancer nurse said everything looked normal but still sent me for mammo (seem to do them for over 30's) and ultrasound and both clear though did have swollen glands which were causing the pain and now take epo daily which works. I am still trying to find out cause of my back/arm pain and all my blood tests were clear like yours. I would mention the original lump and tell them you're concerned that its not gone away after all this time and hopefully they can put your mind at rest x