I wanted to post my experience in hopes that it's some how useful to you.
I had sever PPD/OCD. My midwife initially was concerned I was actually psychotic. (Although that word is fairly extreme sounding.) I had never experienced OCD before. My closet was whispering to me: I was a bad mother, my clothes were out of order, no one liked me. EVERY! time I went into that damn closet my life would get worse than it already was. During this time I didn't not love my DH. I just was so consumed with concern about taking care of this new life, trying to function so no one would think I was crazy and take my baby away and trying to make that closet happy so it would stop whispering mean things to me that I really didn't have time to factor in my DH. That sounds really mean. I don't mean it as harsh as it sounds. Like I said, it wasn't that I didn't love him, it was literally that I had no energy to have emotions at all. Well, at least happy emotions. I had plenty of negative ones and it was taking me all I had to keep the negative ones "in line", I didn't have time for happy ones.
Not that I thought like that at all. I'm just telling you how it was.
I finally got help when I realized that it was taking me 45 mins to get dressed every day because the closet had to be in a certain order before I could get dressed. If it wasn't in that order, I had to get it in that order before anything else could happen. (Have you ever tried to determine how wide the straps were on a tank top so they could be in width order? shudder!)
My Dear hubby was there through the whole thing - of course. I feel bad for him because he tried so hard to be understanding, but seriously I was fairly unreachable. To make matters worse, while I knew there was a problem I was convinced all new parents have trouble.
I admire you guys for getting help. It was the best thing I ever did. Shifting hormones SUCK!

I just wanted you to know that just because a person doesn't necessarily seem attached to you, doesn't mean she isn't. (That sentence structure is awful! But it really says what I mean.) I would have been crushed if my DH had left during that time. But in all honesty I wasn't paying much mind because of everything else going on.
As hard as it is now, I'd like to you know this too shall pass!

(Also, I did not have this kind of trouble with my second child. So please don't be nervous about having another child just because of this experience. Each pg is different.)