Congratulations on 44+ days sober that is awesome. I had anxiety just as you described in your post. I have to take the bad days with the good but I know I am doing the right thing staying away from booze. Booze will just send me right back to that anxiety riddled hell I was stuck in for so long.
I am nearing 200 days and yes I get anxiety still but it is much more manageable than it was. I too was afraid of driving or going to the supermarket but I just made it from ny to California on a flight for work. This I didn't think was possible 3 months ago so keep going and it will get better, I look forward to how I will feel after a year sober.