Why do I still feel drunk a few days after I drank? Help..?

This happened to me before. Every time I drink & get drunk it sticks with me for about a week before I feel normal again. During that week I always feel extremely emotional/frustrated &I feel like I lack motor skills like I do when I'm drunk.. I can't concentrate/focus on anything at all. I've gone to the doctor about it before & he didn't really help, he just said I shouldn't drink then & that maybe some people just can't handle alcohol. Because this has happened to me before I always watch my drinking.. I'll pace myself & won't drink to get drunk, but a few days ago I had a 4loko which is 11% alcohol & I guess I drank it a little too fast which caused me to get drunk & now I still feel that way. I searched yahoo answers & another girl had almost the same problem as me & it says that maybe she had a toxic liver & she had to detoxify it with milk thistle? I'm not sure if this is true or if there's any one else who knows of anything else I can do? Please help.. I'd really appreciate it!