What am I doing wrong??

My husband and I have been married for 2 years and together for almost 3. We have an almost 2 year old and we're due in 8 weeks with our second baby. In the beginning he was infatuated with me always telling me that he loved me and thought I was beautiful and how lucky he was to be with me. Now he hardly talks to me or touches me. I'm a stay at home mom and I always make sure the house is clean and laundry is done and that dinner is ready for him which most nights he ignores and makes a frozen pizza. He doesn't say I love you to me or cuddle with me or hug me at all, in fact if I try to hug him he'll just stand there with his arms to the side and walk past me as I'm trying to hug him. I feel so far away from him, he is constantly pushing me away and I feel like I have. I no purpose to him other than to care for our son for him. What am I doing wrong?? I feel like he no longer loves me.