Husband acting a bit off...

I'm 27 weeks pregnant and things have been moving along pretty well. My husband seems excited for our new addition, he's planning more than I am, lol. The problem tho is there's no affection anymore, no hugs, no kisses, no holding hands...all the things we used to do. My favorite thing to do was lay on his chest and watch our fave t.v. shows together. That hasn't happen in months. I brought up my concerns a while ago and he somehow blamed me for it, so I knew it'll be beating a dead horse to pursue it any further. A couple weeks ago he took his ring off and left it in his nightstand and haven't worn it since. Though I've noticed, I chose to stay quiet because I didn't want an argument ( which seems to be the new norm every time I open my mouth) but I eventually caved and asked his reason for not wearing his ring and he says, "it's in the draw somewhere and shrugs his shoulders", he then got dressed for work and left, without the ring!. I've also noticed that it's increasingly hard to get his attention, it's either he's blatantly ignoring me or being sarcastic and mean. He works in another state and sometimes days would go by before he comes home again, all that time we'd probably talk once and that's to say he's working overtime, smh. I have to literally beg him for a kiss or force a hug on him. I feel unwanted and played 😳. He has never given me a reason to doubt him in the 7 years we're together, 5yrs married. I understand being stressed but he talks to everyone else and he's not mean to them. I feel like maybe I've done something wrong to cause this change but he won't talk to me about it. Sex is like work and only happens if I initiate and I really have to try hard. When it's done, no more touching or even talking. Ladies, please help! Is it pregnancy hormones messing with me or is he truly being weird? How do I get him to talk to me and not be insulting?