Exactly. Stomach pH is even measured sometimes as part of diagnostic testing. That is not pleasant as a tube has to be put through the nose and into the stomach to do that. So a trial of ant acids, and or acid reducing medications is a reasonable and practical test to see if it helps the symptoms. persistent nausea however is something that should be addressed by a physician, preferably gastroenterologist. One must rule out serious causes of persistent nausea, such as stomach cancer, to be safe, which is done by endoscopy.