at the end of the day he didn't care if my daughter never saw her mother again when he was squeezing my throat, I need to keep remembering this
This man would have snuffed out the life of his unborn baby if he had killed you.
You could easily have miscarried (and still might) due to shock and stress.
If you think for one single minute that allowing this man to have contact with the children is going to be anything other than a way for him to torture and torment you and make your life a living hell, you need to think again.
He has absolutely no interest in forming loving relationships with other human beings. He only wants people in his life in order to destroy them.
Do not hand yourself or your children to him on a plate.
I can only surmise that the SW's conversation about contact is a way of checking whether you are determined to put the children first or if you are likely to be led by sentimental considerations. When you express hope that there can be contact, you are saying something very worrying to the SW.
Dig in your heels and say NO to this.
He will never, ever be the man you hoped he would be. Never.
Nothing will ever change him. Not your love, not the love of his children.
Wrt a non-molestation order and non-molestation order - you need to get these orders in place ASAP.
Please contact the police officer you are in touch with and get him or her to help you secure these orders.
www.womensaid.org.uk/the-survivors-handbook/getting-an-injunction/
Information on the orders.