It definitely sounds like agoraphobia.
And, I've been there, too. Matter for fact, I'm just getting my almost second bout of agoraphobia under control before it controls me, so I do understand...
Good that you've reach out to psychiatrists. If they don't get back to you, why not speak with your General Practitioner (GP)? He/she might be able to give you an antidepressant w. maybe a benzo in the beginning to get your through the hump.
I currently take 20mgs of Prozac. The start of it always gives a bit more anxiety...hence, the benzo in the beginning to counteract that.
It is hard when others don't understand, and you're feeling like a burden, but don't. It's not your fault.
You can and will get better. You're in the right place here, with others who understand.
Something that I think of when anxiety really tries to get me is this: No matter where I am, I can have an attack. Even in my comfort zone. It proves to myself, that, no matter where I am, anxiety is there and...for me personally, the negative thinking can make or break an attack.
I never fight an attack. It only makes it worse. Just let it happen because the sooner you do, the quicker it stops. Feel the fear.
Sorry I babbled there.
I do understand, though. Years ago I couldn't leave the house- not even to go in the backyard.
Think baby steps. Exposure therapy.
If you're nervous in the yard, sit in the yard 5 minutes a day. Until you get comfortable. Then up it to 10 and so on. Same with any place that you are avoiding. Baby steps. 5 minutes at a time. When 5 minutes are up, you can go home or back to your safe zone.