I only feel feelings when intoxicated.
What do you feel when you're sober?
Nothing at all, like I'm dead inside.
If you only feel emotions when you're drunk it could point to some serious emotional issues. If you don't address this now it will be very hard to later in life. You should get some help to work through these issues.
I don't know what to expect to feel.
I understand that, and that's probably due to the path you've been going down. Taking this first step to getting help with their drinking will most likely make you feel happy.