I've been off the booze for nearly 7 years and I have similar times where I can't remember a word. There's a word for it, but I can't remember it!
I suggest you see your doc for a couple of tests, if only to put your mind at rest.
One thing is certain, abuse of alcohol is detrimental to the brain, so well done on giving up. Keep going...want to see your 12 months post.