Pregnant women who drink coke and have a suddenly enlarged stomach may have a bloated stomach, or the stomach may get bigger as the fetus grows. Cola is a carbonated beverage, drinking too much cola may cause gastrointestinal flatulence and enlargement of the stomach, which will usually recover slowly after digestion. It is also possible that the enlargement of the stomach is not due to drinking cola, but due to the enlargement of the fetus, and the belly slowly rises to show the enlargement of the stomach. If there is no other discomfort, you can observe for the time being. Pregnant women should pay attention to their diet during pregnancy and it is better not to drink cola. Cola contains high sugar and drinking it may cause abnormal blood sugar and blood pressure in pregnant women. Pregnant women are advised to eat a light diet with well-balanced nutrition to ensure the development of the fetus. During pregnancy, you should also have regular checkups and seek medical attention if there is any abnormality.