Siz/Eric, welcome to the forum. And congrats on stopping drinking when you suspected something was wrong. Self-diagnosis is a dangerous thing. It is highly unlikely that you have cirrhosis. That takes YEARS of heavy drinking to accomplish, unless there are extenuating circumstances. such as abusing ibuprofen, or other factors. Also, you have youth on your side.
Believe me, I partied hearty in my youth....quit drinking 27 yrs. ago...not because of my health, but because I didn't like the person I was becoming. I had a transplant 2 yrs. ago, but because of liver cancer caused by hep C.
Go see a doctor and get lab work and an exam...other tests if deemed necessary. As stated, we are not doctors, but I feel confident that you will find you have acute inflammation from the drinking you did. You know, there is such a thing as alcohol poisoning (especially in young people) and they can die from it. I don't think it got that serious with you, but do stay away from the booze. Also, do not make the mistake of exchanging drugs for alcohol, not even pot. Live a clean life and treat your body with respect. It's the only one you have. It may take 6 months for your liver to normalize, but the liver will regenerate and heal itself in these types of situations. Even Ziff, from the post above, who had been drinking heavily for years and was older than you, was able to recover from ALD (alcoholic liver disease.) So please relax.
Are you on your parents' insurance? Do you live at home? Since you are 18, you do not necessarily need to take them with you to a doctor appt. or the ER, unless it's required due to insurance purposes. You do need to let them know what's happened, but maybe not for a first visit. I know you do not want to reveal this to them, unless there really is something going on.
I think you are awfulizing a situation that is far from awful. Think of it as a learning experience.
Trust me, I am not sugar coating anything. It's not my style.
You are an intelligent young man and I am very glad you found us.
Hugs,
Connie