Mild nausea with light burping every few days. what could it be?

Nausea, burping: Many things can cause those symptoms. Pregnancy frequently causes nausea in women, so if sexually active, check a pregnancy test. Often, gastritis (stomach irritation) can do it. Avoid spicy, acidic and carbonated foods and drinks. A bacteria called h.pylori can cause stomach ulcers/gastritis, and can be tested for easily by your Dr. First, try an antacid pill. If that doesn't work, see a Dr.