Marital problems

Q: I want to ask you if my marriage is still valid. Its been 4 years and my husband didnt have any physical relation with me at all. We sleep in the same bed but he doesnt even look at me. He fights almost everyday with me and he shows no interest in me at all. I asked him so many times but he doesnt answer. He doesnt have respect for me. I am living with him only for the sake of my kids. My husband hates me. He doesnt have any medical problem. Please help me.