Is it normal that i've become "stupid"?

Stop drinking, I did and now I exercise my tussy! Because Im built like a black girl. But Im a jewish white woman.

You are killing brain cells and your self slowly please try to stop.

If you've killed off those brain cells, which heavy, constant drinking will do, they will not regenerate. What damage you have done is 100% permanent. In time your brain may find work-arounds for the damaged areas, but you will never be as you once were.
Of course, there's a much simpler way to become the stupidest person on the face of the planet; be the parent of a teenager!

Enough!! Call yourself out as you drink. Get mad with yourself!! Smash the bottle down with tears of rage!! It can't win, It just can't!! (i don't drink btw)

Most certainly not. There could be a variety of reasons, although none are pleasant. It could be that you are depressed? Or underslept? And maybe possibly even your diet could be healthier?

I know the first two are believed to have an effect on brain function, and from first hand experience I'm much smarter when I'm in a good mood and all of the above. Aim to challenge yourself more little by little to what you were able to do before, and then challenge yourself some more. The mind and body can heal in amazing ways.

Most of those symptoms you describe start to go away with time. The trick is staying sober long enough for your body and brain to begin to recover. I am sure you have heard of post acute withdrawals. You will probably feel off the first 6 months to a year after you are completely sober. It is okay though because a lot of these problems are reversible for the most part. If you continue drinking however, they will begin to be irreversible.