You can take the rescue remedy as required, I use the mouth spray and not as often as I used to. So it DOES get better, but I was a long while believing that my brain and body were beginning to harmonise again.
You seem to have a good GP and glad that your OH went along too. What we believe and what we feel are totally alien to each other and my feelings often over-rode what people would tell me. It was in my gut and bowel not my brain and the fear took over rapidly.
I take Ciprolex 5mg at night. That means that if it makes me dozey that's fine, any other side effects can go over in the night. I take that and my 40mg beta-blocka whilst in the bath with an Actimel drink .......... that way I am already on my way to relaxing. Nights when I am unable to sleep I use my NintendoDS or listen to the radio .............
Half a day at a time