Please, think carefully before you involve someone else. Your husband may resent it and blame you for getting others involved and not talking to him directly about it or trusting him enough to sort through his own issues on his own/with you. Also, people can be very meddlesome and make things worse rather than better, which is why I’m totally against involving others.
A lot of men are completely oblivious of what a woman is going through during pregnancy (not just desi men) but men in general. My friend is currently six months pregnant and her husband just doesn’t care. Well, he obviously does but he just doesn’t know how to show it.
With your hubby, it could be a number or things; he could be trying to come to terms with becoming a father, again, or can merely be very homesick/depressed as Mama has suggested.
Keep talking to him and let him know how you feel.