Do you have an attorney helping you with custody paperwork? If so, I'd follow the advice of the attorney with regards to sending paperwork to you H. I find it so odd that he isn't attempting to see his little baby.
I'd just wait it out a bit longer, I'm sure he'll be in touch soon if he sent the song message. Also, if he said "don't call me, I'll call you" and you don't have his number...
My heart goes out to you. Sorry your going through this.
M: 37 H: 36 Married: Aug 13, 2004 Decision to Divorce: July 20, 2008 Reconciled: September 2008 Current: Ambivalence