pleeeaaaase don't smoke while you're pregnant. stay away from all substances (even caffeine!!) i spent all summer working with kids with disabilities caused by exposure to harmful teratogens, it is so sad because all of their disabilities are totally preventable. if you smoke your baby could be born premature and/or have a low birth weight. there is also a chance he/she could have brain damage. just wait and then afterwards you can celebrate and get really stoned.