It seems clear from your letter that you had an anxiety illness six years back, treatment helped, and your symptoms went away until now, when a new thing to worry about has caused a return of your anxiety illness. This is not surprising; both anxiety and depression have a tendency to come back, especially when there is a new, stressful situation.
I suggest you go back to the doctor who treated you back then, as the same treatment will probably work again. It would also be good for you to get some counselling and education about anxiety problems, so that you can understand your illness, what triggers it, and what you can do in terms of better mind control, such as meditation and yoga, to control it, in addition to medications.