don't think too much as it only brings you unnecessary stress. like what the other mommy suggested, baby's sleeping area to be as empty as possible. other than that, don't sleep with baby in your arms or too close to baby in case of suffocation, don't let baby sleep on its tummy too, use only light muslim blanket. Only allow sleeping on its back. I've raised 6 children of mine own and baby sat other babies as well. Trust me, you got to relax.