Congrats on getting so far with this really difficult process of coming of lamictal and booze. Wow! You've done double duty. I get OCD (along with all the rest lol!) and I have to challenge it every day, but I win and I get better and stronger each time. Although I have lost my caps lock button on this keyboard and it is driving me NUTS!
Hopefully those worrying thoughts will get less and less as you move further along this path. It can take a while to get alcohol completely out of your system, and it can make you feel like you are losing it (for a while - it passes). Just keep doing what is working for you.
My brain was mush when I came off the bottle for at least a month. It takes time for your brain to adjust. There is a whole world full of hope for you. Just trust in it k?