Missing my baby

My son just started sleeping in his crib in his nursery. Prior to this he slept in a Dockatot in bed with me. Now I'm so sad at night, I miss him. I feel like I'm missing a limb! I would bring him back in here with me, but my husband was having to sleep in our guest bedroom because there wasn't enough room for him in our bed with the Dockatot. Now he's back in our bedroom and wants it to stay that way.

I understand, but it still makes me emotional. How are our March babies growing up so fast?!