Welcome to SR, Castertroy08. It's never too late. The human body in general and liver in particular have amazing recuperative powers. Give sobriety a real chance and you'll be amazed how quickly you'll start feeling better.
Though if you really think you've done some damage, getting a full checkup while being honest with a doctor is always a good idea.
There is a ton of great wisdom and support to be found here. Glad you found us and hope to see you checking in often.