I am not a nurse and I have told the doctor about my craving for baking soda (pica). I am 37 weeks pregnant with no complications. I am not anemic and all the blood tests came back normal. I have been taking my prenatal vitamins. Why am I having these cravings? My doctor has no clue.. he just said its normal and I should stick to baking soda and stay away from detergent (which I am also having cravings for) Any advice would be helpful. Thanks