There is no such thing as a stupid question. I would wait to attach the label until after the baby is born and then hand stitch it on the back. If I am just making a quilt for fun, I will machine stitch the label on in the corner in the seam allowance for the binding and hand stitch it on the other 2 sides after the quilt is quilted. Then, I fold the binding over the machine stitched sides and hand stitch the binding down to cover the raw edges. Personally, I don't machine sew the label to the backing....in case I want to use the quilt for a gift later on.