You have heartburn and take antacids every day. You don’t have too much acid—you have too little, and there’s a simple test you can do at home to prove it. Here’s how.90% of heartburn cases are from low stomach acid, not high. Your doctor gives you pills that make it worse. This 5-minute test will tell you the truth.Here’s the at-home stomach acid test and what it means:The Test: Mix 1/4 teaspoon of baking soda in 4 ounces of cold water first thing in the morning on an empty stomach. Drink it an