The stomach acidity is especially a current during the pregnancy. It happens when the food of the stomach is impelled towards the esophagus together with the acidic secretion.

This situation turns out to be much favored by the changes that the organism suffers because of the pregnancy: the digestion is slower, the food spends more time in the digestive pipe and the valve that separates the stomach of the esophagus relaxes with more facility for the action of the hormones. Also it is necessary to bear in mind that, on having increased the size womb, it is separating what exists around him doing that stomach changes position.