Anxiety does increase in early sobriety, that is why a program of recovery can be helpful. I know without the program I used which is AA I could not have dealt with the anxiety and would probably not be sober today.
I also fight with chronic anxiety related to PTSD but it took until I was about 4 or 5 years sober before doctors figured out what was wrong with me. Before that they were treating me for depression. Once they figured it out they started addressing the anxiety issues and they have gotten better in some ways want worse in others.
I encourage you to be honest when talking with your doctor and tell him what is going on especially about how long you have been sober. I also encourage you to find a program of recovery to help support you during this difficult time to help ease some of the anxiety. Here is a link to recovery programs:
http://www.soberrecovery.com/forums/...formation.html