I would talk to him to understand whatsome going on. many men are uncomfortable with sex because of the baby being there. As long as you are not having complications it's perfectly safe. Let him know when you need a cuddle. My husband and I are loner type people so we learned to communicate when we need space or when we need to cuddle. Communication is key good luck and don't feel bad pregnancy is beautiful and not everyone gets to experience it.
Many men are afraid of the process. But you can also mention to your healthcare provider about your feelings since this can lead to depression and well this is not good for you or the baby.
Is it possible that he is afraid? I know when I was pregnant my SO was afraid to do anything bc he thought it might hurt the baby.
Well it could be that he doesnt find pregnancy attractive. I mean it sounds mean but its not. My husband and i have 3 kids and he doesnt really enjoy being intimate with me while pregmant because pregnancy grosses him out. But it could also be hes stressed and freaking out inside you guys now have a life long commitment and you guys are new so its hard. Just i wouldnt take it personally