Dear girl, you are having to recreate a whole new "normal" right now.. so I am sure there will be many times when emotions will come and go.. and sometimes come back again. I am no expert, but I am sure panic attacks must be very hard to deal with even in the best of circumstances, so I imagine they would be just awful when things are at their worst.
Just hang in there, pace yourself, and give yourself whatever time you need to grieve. And know that there are many here who care about you and are wishing you well as you take this next step and find your way forward from here.
I will continue to pray for you that God will bless you and grant you all that you need to rest and recover, step by step, with each coming day.