No such thing as too young.
If alcohol is causing you problems, that's reason enough to stop.
Two days? I didn't start feeling even a little bit normal for at least a week. I didn't get a good night's sleep for the first month. I couldn't control my emotions for the first couple months. All I wanted to eat was sweet stuff. I was mad at everything and everyone.
Honestly, you've got to make it past the discomfort of withdrawal - then you have to figure out how to live life free and happy - doesn't sound like you believe that's possible. It is.