Get yourself on the freedom programme,b and referred for counselling via the GP. That's a start. You can do this.
Your abuse was of a kind that was subtle, but reversible. The escalation was after he'd left, so while shocking, was thankfully short. It's scared you, but as you've caught yourself so quickly, you can turn this around quickly.
The phone support would be from the refuge. On top of that there's WA helpline AND respect helpline.
Furthermore you have your HV.
You can do this.
You should be able to get a non-mol based on his refusal to adhere to boundaries, and respond to police warnings, not to mention the drive-by of your mum's.
You can do this. Go see the place on Monday and as long as you like it and can make a go of it, take it and relax in your new home.
This guy's spooked you, but he's a rank and twatty amateur. You have MN in your pocket, by your side 24 hours, and you have the police, the HV, the council and the refuge with you.