I am a post menopausal woman age 47 and have been having severe numbness in my right arm, (especially at night time while sleeping) however during the daytime I also experience pain and at times numbness. I also have pain and sore to the touch areas in the area between the elbow and the armpit of the right arm and am feeling a few lumps. I also have some tenderness in the area between the breast area and the armpit. ?????