I've heard wonders about baking soda and water. Mix a teaspoon, no more than a teaspoon of it, with about 1 or 2 cups of water, no less than 1 cup. My gma use to do it when she was pregnant and got the tip from my great grandmother who was a midwife almost all her life. Just don't do it more than once a day. It'll make you burp, but you will feel better. The baking soda counteracts with the acids in your stomach making it go away within a short amount of time.