Honestly, I'm afraid of meds while preg and I have found the BEST cure for bad heartburn is drinking a half spoon of baking soda with a full cup of water. It's not that bad, I just chug it and it's immediate, all day long relief. When I was taking all different kinds of heartburn meds, I was eating them like candy and they only seemed to work for short periods. Baking soda is a miracle lol.