I have a micro hole in my arm, which produces a small amount of pus which doesn't flow but comes out when pressed in 2-3 months, The first time it came out in huge amounts with blood and pus with great pressure when I pressed it, however the amount is very less now, like a pimple popped. Should i be worried, as it's been there for 5-6 years. I noticed it then it might have been present before.