I have a hard abcess/boil under my arm in the pit. Its hard and has not come to a head I only just noticed it yesterday. I am a meth addict do u think this could be the cause and what should I do its hurts so bad, its not hot like what ive seen from peopl

See doctor. I appears that you have a infection (likely staph) which needs to be treated by a doctor. If you don't have one, go to the ER before this spreads further. Perhaps you can get some help on your meth addiction as well even though I don't believe these two events are related (unless you have been injecting the material).