I need a guy’s opinion on my problem.

We have been married for 5 years and together for 9 years. We have a 1 yr old child.  We have had a very loving relationship, open communication and lots of trust between us.  If there was a problem we always discussed it and dealt with it together. He had until recently a very stressful job from which he was let go(but with a very good severance package).

This past year was not easy for me. I found motherhood to be more challenging than I thought so I might have not been the nicest person to him sometimes. But I have never been disrespectful and we have really not had any major fights. I am doing better now with the mother hood part.

About a month ago I noticed a strange behavior from my husband.  We went away to visit family and ever since coming back he now sleeps in a different bedroom and he would not talk to me when I asked him what the problem was, no hugs, kisses or “I love yous”.  Interestingly enough, he would talk, laugh about other things with me, would talk about our child but he would not tell me what is bothering him.  If someone from outside saw us, he/she would never think anything was wrong in our marriage.  The other night he just said that things have not been going well for us for a while (I don’t know what for a while means to him) and I have not seen any indications of that until about a month ago.  He said that he had lots of things on his mind and that he needed to be left alone.  So ever since then, I left him alone. I act as If nothing is wrong even though inside my heart is breaking every minute of the day.  I love him so much and I also consider him my best friend. I don’t want this marriage to end and my child grows up without the presence of one parent.  I have gone with million scenarios in my head of what could be wrong and I even checked his emails sent to me from about a month ago.  He would use terms of endearment, tell me that he loves me at the end of emails, hug and kiss when he would come from work.

As for the sex life, we have had none since I gave birth, but not because I did not want to.  I tried to initiate it few times, but he would say he was tired and genuinely we were both tired at that time.  I even told him once that I did not want that to affect our marriage.  He said not to worry just to focus on our child for now. Before we had our child we had amazing sex life and we both enjoyed it very much.
 
Even the thought of an affair went through my mind but I don’t really see any signs of that.  I even checked his cell phone (I hate to do this) but nothing unusual there, nothing in his email (we have always had access to each other’s emails, at least I have nothing to hide), no unusual absences from home.

I am  young, attractive, I pretty much lost all the pregnancy weight and I try to take care of myself us much as time permits.  I stay at home to take care of the child, take care of the house, make sure there is a home cooked meal on the table every day, do most of the grocery shopping and many other things.
I really don’t know what to do.

Do I just give him the space and see what happens?

I even considered talking to two of his closer friends and see if he has said something to them. One is a male co worker to whom he is pretty close friend and the other one is a childhood female friend.  I don’t know if this would be a good idea.

I thought maybe I should put on a piece of paper how I feel and maybe he will read it if he does not want to discuss it.

This whole thing feels like someone kidnapped the husband I knew and put an impostor in his place. All I want is my husband back and my marriage back on track.

I would appreciate your honest opinions.