Well done on sending him that text!
It's a good place to start.
Are you working today? Sorry if you already said. It might be worth checking through your employee benefits to see if you have any counselling or advice services that you can access via work (you wouldn't have to tell anyone at work what has happened.)
Something very traumatic has happened to you, and your reaction - having it constantly running through your mind, feeling sick, being unable to imagine being in anything like that situation again, not wanting to be in the place where it happened - these are all common experiences for survivors of trauma.
I hope that in a way you might find reassurance in that - that you are NOT being a drama queen, or making a fuss of nothing, or moaning on - or any other minimising bullshit he might say to excuse his assault on you.
If you need to take the weekend before dealing with the other stuff, that's okay. Do things at your pace.
You have no legal obligations at this stage with the house move, so don't worry that you're going to be penalised for pulling out. If it's easier, you could email the estate agent and mortgage advisor to let them know you won't be going ahead. You don't have to give a reason.
Treat yourself very gently at the moment. Give yourself good food, have a glass of wine (but not to excess), have a nice bath or shower with some expensive lovely bubble bath or shower cream. I won't mention the smoking 