Ok, I've found a Womens Aid Organisation in Malaysia.
homepage here
They sound good, and although I doubt anyone on mumsnet will have dealt with them personally I do think you need to call them and talk to them. They will know how to plan a safe escape plan.
Being in the uk, I would be worried about advising you as the local culture is do different. Above all else, you need to keep safe, keep your baby safe, and keep together with your baby,
I know you say you're not ready to leave him, but you sound trapped, scared, and confused. It sounds like you need help.
They offer shelter, telephone councelling and face to face councelling. They have a phone number and an email address, though email is not for urgent enquiries. They also have some good information and advice about whether he'll change, and how do you know you're being abused.
They also list other women's aid charities [[http://www.wao.org.my/Other+Womens+NGOs+and+civil+society+groups_102_62_1.htm here]