Feeling neglected😔

My husband and I have been married almost 4 years and have a beautiful boy together yet I'm not feeling very happy. He sleeps on the couch most nights and leaves me in bed alone. He says that it's not me but I can't help but think he's just saying that so I wont be upset. Why doesn't he want to sleep in bed next me? Why does he sleep alone and leave me to sleep alone? I hate it and every time I ask him if he's coming to bed he seems to make up some half assed excuse to get out of it like our bed hurts his back even though we've had our bed for like 3 years. I just don't understand. And on top of it all we haven't been intimate in 3 months. I don't do confrontation very well. So my feelings stay bottled up because when I bring them up I just get upset and cry and can't articulate what I want to say.... I'm just feeling neglected. It almost feels like he doesn't want me anymore. Hell the dog sleeps with me more often than he does. I don't know how to tell him without getting upset. I need some advice. I'm an emotional person and it's hard for me sometimes.