Voluntary Breathing.......Anxiety?

Hello everyone, I am a new member to this forum and find it to be very helpful. I am 18 years old and have suffered from panic disorder for several years. I had gone through CBT a couple years ago with pretty good success, although I still felt anxious too much of the time! Recetly, I had a major setback, as I was having constant panic attacks in school and even at home. I finally decided to go the medication route and in the 3 months since i have been on the meds, i have found excellent success. I currently take Zoloft 100 mg and Xanax (.25) on an as needed basis. My problem is, although my anxiety has improved a tremendous amount in the last 3 months, I commonly get this feeling that I have to force myself to breathe. It has gotten alot better on the meds as it is no longer a Constant feeling, but it is still there occasionally nonetheless. Is there anything else I can do to help this feeling/sensation go away?

this feeling of the need to consciously take each breath is fairly common for anxiety suffers, but obviously we still breathe automatically when asleep, so dont worry