Husband has no interest in me

I've been feeling pretty sad lately. My husband and I haven't had sex since we found out I was pregnant. And I'm currently 22 weeks. I was really sick most of the first trimester. But I've been feeling better for a couple of weeks and he still seems to have no interest in me. It's not just sex either, he hasn't been affectionate towards me at all and when we are both home together he just watches sports and stuff he knows I have no interest in. I'm really lonely lately. I know he loves me and he is excited for the baby but I wish he would put more effort into showing me he cares. I don't know if it's the pregnancy hormones or what but I just feel alone.