My husband's back working, but doesn't want me.

My husband has been out of work for months, which left our family homeless my son and I are now staying in a shelter and he's in another town where he works staying place to place up now that's he's officially started the job he doesn't respond to my text or call me ever but post on fb and parties on his days off I'm afraid that he maybe enjoying the single life more than focusing on his family and our needs I don't know what to do or think the last time we spoke he seemed uninterested in what I was going through in the shelter and work and our son I don't understand what's going on or why he's treating me so cold am I paranoid or is he shitty.