It sounds like you're under a lot of stress in work, without all the past major life changes you've just had. I too suggest you to keep seeing your health practitioner.
Just try to remember things 'will' get better one day. That this horrible period is just a painful flash in your life and you'll feel happy and relaxed again, although that might feel to be so far away right now. It's the idea that you're stuck in that 'zone' that makes it worse, I think anyway.
Right now I think you need to try to take out some big stressors in your life, if you really don't enjoy your job, hunt for a new one in your time off . Put off things like study/moving etc for a while and concentrate more on relaxation and hobbies. Give yourself a break, piling up more and more things onto yourself to do, will increase your stress levels and that will coincide with these panic attacks.
Wishing you all the best in the future and hope you feel better soon!