marriage

My husband and I have been married almost a year. We used to have a wonderful relationship and maybe we still do and I'm just being hormonal and negative but it just seems different. I feel like we lack intimacy and communication is way more difficult. We're having our baby in 5 weeks and I know things are going to get a lot more difficult after and I try to talk to my husband about that and he acts as if it'll all just be fine. Advice?