M.M.
If you have a wrap or sling of some sort, wear him. Believe me, these are the best tools for Mommy out there. I love wearing my baby girl in my Moby Wrap, especially on nights like tonight while she is teething and is extra fussy. He will be able to sleep and you will be able to get some things done with both hands, almost. I found I had to watch my little girls head, because she would go so limp, so I was holding her little head up so she could breathe properly.
Oh, and I so love co-sleeping. My little girl sleeps so well next to me. Trying to move her into her crib has been difficult, especially on me. I love sleeping with her next to me, so I made myself a little bed on the floor in her room for those early morning wakenings when I just don't have the energy to go back across the house.
It does get better as they get a little bigger and these little ones grow so fast.
And Congratulations!