I need help please

So my husband and I have been together over a year, but have been married 4 months. Idk what’s going on, but I feel like I don’t want to be with him anymore; I dread going home, I dread sleeping because I know I’ll be next to him. He’s done nothing wrong necessarily, but anytime I want to talk about deep feelings he doesn’t take it seriously and gets defensive for everything. It’s so hurtful because I feel like I’m the only one trying and when I tell him that he just gets mad. He’s much older than me so I think maybe that’s coming into play as well, advice please?