Hiya
Im afraid it sounds exactly like my husband at the moment. When our baby was 3 months old, he was like that, working alot, not staying out unless he was working far away but not talking to me much, not showing much affection, still wanting sex but not being his loving self. One day he announced it wasnt working and he wanted to move out for a bit. He went away for a weekend, i was devastated but held out for him coming home and was hoping he would tell me what was up. He basically blamed the way i was, how I had changed, dont have time for him anymore, he feels pushed out, dont have sex like we used to etc, which made me mad, a 3 month old, id had a very bad labour and endless amounts of stitching!!!! Anyway, we sorted things out and moved along, things seemed to be going fine, had the odd niggles and he started to annoy the hell out of me, simple things like his laptop or xbox! 6 months on I have found out he has a secret mobile phone, to which he says he texts people he has met online, and again, my fault of course because i have changed! When I found the phone he was just on his way to work for 3 days, so he just stormed out and drove off like an idiot. He came home after those days at work and acted almost as if nothing had happened. He wouldnt talk about it, was like he was mad at me for finding the phone! A week on, after snooping I found out he tells a girl he loves her, confronted him about her when he had been out drinking, he went crazy, never seen him like that, I said who's gemma, he said i dont know a gemma, i said tell me the truth, and he insisted there was no one else and didnt know what I was on about. Then he just got up n got mad, tried to get his car keys, wouldnt let him as he was drunk! Now gone away with work again and im none the wiser, apart from he says he doesnt know what his intentions are with her until we are sorted! Do you know what, now I have written this to you its become so much clearer! I cant stay with him!
I hope your husband isnt cheating, but I would look around like the other ladies say on here. And if he is doing anything he shouldnt, it will come out in the end, but perhaps sooner rather than later for your sake. I feel the same as you do I expect, struggling with the thought of bringing a baby up as a single parent when your plans were a happy family life xxx