We are not on our own however:

Jessieblue - there is help out there. I sent MIND an e-mail - how did you contact your local Group? Also, years ago my GP gave me beta-blockas which ease that awful surge of adrenaline which can trigger anxiety. On top I have an emergency med., of course meno-brain here can't remember the name, other than it begins with an 'L' - on an as-necessary basis which is how I used
Valium successfully during the 1991s.
As stated what you do 4 your family won't be noticed - how about giving each of them chores: i.e. keeping rooms tidy, putting laundry out to be washed, let them do their own ironing, cooking, washing up? Delegate? to the point of being able to take 1/2 evenings 'off' each week? That way they may see exactly what it takes to organise keeping a home.
Let us know how you get on at MIND and there is Samaritans too who may have lists of local contacts which may be helpful.