hi needhelp
welcome to the forum, i am sorry to hear you having such a tough time right now.
you ask: when to draw the line, perhaps now is the time to, if not for yourself, then for your daughter. Your husband has taken his anger to a different level, and he feels this behavior is acceptable because you forgive and forget, let me tell you, his behavior is totally unacceptable, cruel, abusive and illegal.
your husbands behavior will probably will not go away unless he gets professional help, as he is suffering from some form of psychiatric illness, but untill that time you and your baby are in real danger of being seriously hurt.
My advice to you, as hard as it may sound, would be to get away from this brute as soon as possible. He is not the man you married and gave your heart to, he is a sick man who needs help to overcome his abusive behavior, and nothing you can do will make him understand this, he will blame you for everything and anything to justify his abusive treatment of you.
Please seek help. for the sake of yourself and your daughter
You can phone the national domestic violence helpline, you will find their number here,
http://www.refuge.org.uk/
they will offer you guidance and very good advice, please listen to them
kazbat