I  am 59 yr old female breast cancer survivor for 6 yrs during treatment I had 5 kinds of chemo and herceptin plus 35 rads after lumpecomy on left side. approx a month ago i found a lump just above the right collar bone orig not sore but it is getting painful at times especially if a raise or use my right upper arm for any weight lifting.  My primary care said it looks like swollen musle  no lymph nodes in that area. My neurologist took xray and could not find any problems all blood work is fine.  Any suggestions I am not due to see my new oncologist (prev  one retired)until December?