Calling the police may not be able to get the help that you are looking for. Contact above association and you would be much better off. The 1st and 2nd one provides 7x24 services.
If you need a new flat at public estate, that's true, you need to report it to police. Or else, your social worker could not work on your case and assign a new flat to you. No report, no flat. Simple as that.
For you husband attitude, as I and many had told you, approach other social workers and they will provide all kinds of help that you need, say, understand your problem, helping you to make up your mind, meeting with your husband, meeting with you two together, solving husband attitude problem, etc. He sometimes acted bad, worse and well behave. And that doesn't prevent you from approaching those social worker.
Besides, those organizations could provide a place for you (and also your kid) to stay.
You kept mention that your husband keep an eye on you. Unless you are happy with your current situation, then, who cares? Forget about your cell phone.
Trust me. I cannot give you all the advice as you cannot tells us exactly what's happening. Give them a call and seek their help / assistance. That's what you need.
If you are not happy, would your kid happy? Ask your goodself, "I am not happy, why should I keep this marrage?" Consider your financial, living, and kid issue. Yes, I know you may not be able to solve all of them at once. That's why those social worker can help you on this.