Member, if you wish to quit drinking I'd recommend posting here often for support. Not just try to post. I always tell myself that I had all the time in the world and all the drive to plan my drinking and to get drunk. I put as much time to getting and staying sober in the beginning as that.
Chances are that you do not have brain damage. Anxiety happens with withdrawl. Don't feed it by reading more information online. Worst case scenarios won't do any good at the moment. Schedule an appointment with your GP when you return home. Don't shy out on going either. I always scared the heck out of myself about the withdrawal and then wouldn't you know? When I felt better I'd think "hey! That wasn't so bad!" and start the cycle over again.
Stick close and see you around.