hi there.. big hugz.. I'm so sorry to hear this. I agree with the above reply that you should seek counselling.
Also, perhaps consider taking a short holiday or staycation just with you and hubby (without baby) such that you reconnect with him and take the opportunity to talk to him again. (Do this only if you feel safe enough to travel alone with him since you mentioned about his violence tendencies!) At a relaxed and neutral setting without the baby and your parents, he may be to hear your point of view, rather than get defensive.
Regarding the point of violence, if he's turning violent towards you or baby, please make sure you have a safety bag packed with all your important documents (passport, bank books, baby's birth cert etc..) that you could quickly grab and go.
Hope things work out for you and stay safe.
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