Quoting Single_Mama:" I would be open with him an let him know that you really need him now. You just had a baby and you want him by your side. Hope everythng gets better for you."
After I had DD, when DH was at work I would cry all day because I just felt so alone without him there even though I wasn't alone because I had DD. I didn't say anything to DH about it then because I didn't think he would even care, but a couple months later I brought it up and he truly felt bad that he was not there with me when I needed him. Speak up, let him know you want him home. Sometimes men really don't know any thing at all unless you tell them, I've come to realize that. Hope things get better for you though, I know it sucks.