tattooguy8617

So I have a quick question. A little background on me is that I have a problem of self diagnosing on the internet. I am a 26 year active male. Yesterday I got back from the gym and I felt a slight pain in my left arm pit. I felt around and it feels like the pain is coming from the skin where the hair grows. I started digging in search of my lymph nodes and I finally found them. I felt one that is movable, not painful, and smaller than the tip of my finger. Id say the shape is like an oval or maybe a bean. Should I be concerned? Of course I am having an anxiety attack and keep feeling for it? Any thoughts??