I am briefly de-flouncing just to contribute to this thread, I was doing a spot of child evasion lurking and can't ignore you NAB. I don't want to hijack or derail your thread but I wanted to share my own experience with you, in case it's helpful.
I had a 'breakdown' some time ago and was physically, mentally and emotionally shattered and barely functional for quite a long time. Depression/anxiety is a fact of life for me, and at that time I had no strategies in place to control it.
When I was really desperate and not thinking straight I decided I needed to get away on my own, clear my head, have some space etc. Not for long, just a couple of days. I experienced this as an urgent need (it was about 4 in the afternoon on the day I decided to go, I went into a travel shop and booked myself on a flight to Edinburgh, thinking I could just find a B&B when I got there (I'd travelled on my own a bit before). I felt really exhilerated and empowered, got on the plane, found a tourist info place and got a B&B, got there and unpacked. Then the most wild panic came over me - I didn't dare go out of my room to find food, the people in the next room were having a noisy party and I was conviced they were going to try and break into my room and hurt me, I became more and more distressed and ended up hiding under the bed shaking all night and then going straight back to the airport in the morning and paying top whack for the earliest flight home I could get.
I don't know the details of your situation (or your depression or your personal troubles) or how much parity there is between your desire to 'get away on your own' and mine - but I can see where your dh is coming from. He's probably just frantic with terror for you. My (now) dh went through a hell of his own with my breakdown and the worry etc.
I am so sorry you are having an awful time. I think you should be gentle with yourself and your dh and talk, talk, talk. He needs you to communicate your feelings as they occur and you need the same from him. Don't see it as a question of obedience versus independence, it is just clouding the issue. Ask yourself whether your dh would deny you a day to yourself if you weren't in this state?