I have both direct experience of this personally and indirect experience professionally.
First and foremost, are you actually safe? Do you need a restraining order? A panic button? Is there a plan?
What would make you feel safer?
If it is psychological violence then the only way is to cut him off completely and do everything through solicitors, with no direct engagement whatsoever. Blocked on every platform and no contact.
There are many routes to feeling safer. Have you explored every one?
If you are as safe as you can be, and not at imminent risk then it’s your central nervous system that needs to be lowered, at the moment you are probably on red alert in full flight/fight response.
Breathing techniques ( you tube and google) once you regulate your breathing and do this as many times as you can, you are sending a message to your system that you are safe.
Warm water bathing in Epsom salts. Swimming and floating - closing your eyes will help
Massage. You might cry all the way through. Just let it go and release.
Holidays really do help, or days by the sea.
Hugs - long ones that allow you to feel safe.
Usually when the most stressful time passes, our body then processes the emotional pain. You might feel even worse than you did before. You might be devastated and not understand why. No one can process everything at once, so often the reality/pain will be cordoned off as your deal with the most immediate danger/risk but then it comes roaring and back when you are relatively safe.
You will be a new version of yourself now, a stronger, more resilient, perhaps more fragile you - but you survived it all. Self care and self love is needed now, go easy. Gentle and positive reframing. Yes you wouldn’t have chosen this to happen but it’s all about where you go from here.