I AM HAVING A TINKLING ON MY LEFT ARM, FROM THE ELBOW TO SHOULDER, ALSO A PAIN UNDER MY LEFT BREAST IS THAT ANYTHING TO WORRY ABOUT? Just found out my son may have cancer in his kidney, he s 44 & only child, I lost my husband 3 years ago, not to cancer. maybe this is only stress. YYYY@YYYY sorry to brother you, thought this was a free question, guess if it gets any worst i ll go to the emergery room. thank u