What do you do?

What do you do when you feel like your husband no longer wants you. We have an almost 2 year old and I'm 16 weeks pregnant. Yes I am overly emotional this time around but I cant help but feel this way. He never wants to go anywhere with me, he barley touches me anymore, we barley talk and when we do hes snippy. I just cant take it anymore. I xant get him to talk to me cuz then he gets mad. I cry all the time he either laughs or says hes not gonna deal with this shot the whole time. I always feel like hes talking to someone else or something. I'm just tired of feeling this way and crying. Hes supposed to comfort me and make me feel better but he dont it's like he dont care.