When I exhale deeply (pushing all air out) I get a tiny dull pain in my left armpit. This pain is also caused sometimes when I place my arm in a certain way when extended or in rotation for the last few months. Last week, for about 2 days, I had dull pains in my lower abdomen center and left side, but that has gone away after a few bowel movements. Also, have had night sweats the last two nights. I or my wife have not found any swollen lymph nodes in the area or neck region. I ve been incredibly stressed lately with lots of change and transition. Moving from one country to another, baby on the way and graduate school graduation. Thoughts?