Hi, my concern is in swollen lymph node under my armpit. I m 29 years old male, 175cm high, 80kg weight. First of all i am a little hipohondric. Two days ago i felt a mild movement pain and a little ball under my left arm ,not visual only when i touch it. The pain came suddenly, and now the pain is gone and the ball i cant feel it any more, i ve run a regullar (at 6 Mounths) blood test a month ago and everything is ok. WBC 8,5 X 10 3/mm3 , RBC 5,9 X 10 6/mm3 is there any place of concerns about it. im feeling a little woried. No hystory of cancers in my family. Thanks