Agree with fabulouse.
Other posters are encouraging you to look at why he is abusing you and accommodate it. This is ridiculous.
Abuse commonly begins in pregnancy, especially when the abuser has issues from his/her own childhood.
Abusers who strangle are highly dangerous. Strangling in combination with sexual abuse is correlated with higher murder rates. When he is hurting himself and breaking things that is abuse too.
Now, there is a common perception that an abuser is a horrible thoroughly evil and sadistic person. This is generally not true and it can be hard for victims of abuse who have got into a mindset of "he's had a terrible time I need to help him, he used to be so lovely, we can get back to that" to escape abuse.
The reality is that most abusers were terribly abused themselves I'm sure, when the abuse starts to be directed towards you there is no going back. Yes, he is your lovely partner that you remember but he is ALSO the man who strangled you and headbutted that picture.
You cannot fix him. Only he can fix himself and it is dangerous for you to gamble yourself and your child on trying.
I'm sure you are all under severe stress but when someone strangles you or brings violence into the home the only thing to do is split up. There is no going back from that and it doesn't matter why it happened. There are always reasons you can find but not everyone abused in childhood strangles/abuses their partner. You need to recognise he is choosing to deal with it this way.
Could you call women's aid on 0808 2000 247?