So sorry to hear you are having problems. I have a friend that goes through this. Her panic attacks seem to come in waves. Don't know what triggers them, or what sets them off, but do know she has a very difficult time once they start, there's some days she can't even drive.
My prayers are with you. Learn to relax! Take life one hour at a time, try not to over extend yourself. I think the vacation is coming at a good time. You need to get away. Stop thinking about everything that need to be done. It will all get done. Maybe not when you want, but it will get done.
Sending Pixie Dust and Prayers your way!