My opinion in the question would be, never unattended, and not while you are sleeping too. The thought of this would make me nervous, just because it would be so easy for a baby to suffocate. If your baby is still where he/she can't roll over alone, and you are talking about sleeping with you through the night, be really careful. When you move so does the bed. If you move to much it could cause waves in the bed, which could then roll the baby. Again I am not a Dr. and you should double check with yours, but if it were me, I don't think that I would take a chance.
If you want to keep your infant close, bring a bassinet in your room and put it near your bed. Maybe this will prepare you more for when your baby needs a crib, and will be in his/her own room.
Labels: baby questions, baby sleep