To call or not to call; any advice?

Over the past three months I have had to call 911 because of a violent outburst resulting in a fall-though not seriously injured, husband was taken by ambulance to the hospital -lots of tests-nothing new-no UTI. Then a few weeks later I was hit harder, called the police. They came, were very respectful and kind, son drove husband to hospital-more tests-no UTI again. The costs of these trips are resulting in enormous insurance co-pays. Bank account overdrawn from mid month on trying to pay bills. His decline is horrific to watch and to deal with every day. His obsessions often result in such anger and threats to me, they are potentially harmful to me, to our two pets and to himself. He demands cigarettes now all day-another thing I cannot afford to provide, drinks coffee all day, fiddles and fidgets with personal items, filling his pockets with everything from his hairbrush, to electric shaver, cigs, misc keys he has found, toothbrush and more. He hides things all over the house then demands that I find whatever he has lost or get something that was "stolen" from him. He thinks I live somewhere else and why so I sleep here? I am a b----, and other ugly names and I should emphatically get out. He expects son to take him back home nights and mornings, thinks he owns multiple house in our community which he wants to sell-has actually called an agent here to find out what the houses are worth. I could go on and on and on, but I know that many of you are having these same experiences. I live in fear, though I reach out to resources, but how do I try to talk with someone when he follows me everywhere now. I am so tired, heartbroken and heart worn, respite grant will be over next month.