Should i be worried

My husband seems to now be carrying his cell phone everywhere he goes to the kitchen to the toilet to. He works in the morning and when he goes to shower he takes his phone with him. Should i b concerned? . He has started acting very cold toward me shouts at me for no reason blames me for all our problems and arguments. When i try an talk to him he tells me im stupid snd my brain is full of nonsense. Iv been so down and depressed and i dont know what to do. Iv done the whole detective thing but its exhausting i cnt do it anymore. I feel like he hates me or just doesn't like me anymore. I do my best to b a loving wife but im very lonely in this marriage.