Definitely go to an ER for detox. They basically have to take you regardless of your ability to pay.
I am so impressed that at 22 you recognize that what you are doing is serious and dangerous to you. At that age, I was just becoming the "life of the party". Took me 20 years to get it.
You have your whole wonderful life ahead of you, and you have a gift in music. Please use both wisely...