The occurrence of heartburn and acidity in pregnant women is clearly related to the physical condition of the pregnant woman throughout pregnancy, hormone levels and the increasing size of the uterus. Each pregnant woman has different symptoms of acidity and heartburn depending on her condition, some of them may be very obvious in the first trimester, but they may get better as they gradually adapt to the state of pregnancy later on, and the symptoms may reappear in the late pregnancy. This is because in the early stages of pregnancy, the chorionic gonadotropin level will rise rapidly in the pregnant woman’s body, and the patient will experience heartburn, vomiting and other symptoms as a result, and this chorionic gonadotropin level will generally decrease gradually after the 12th week of pregnancy, which means that some pregnant women can get significant relief after the third month. However, in late pregnancy the growing uterus with the baby presses upward on the stomach, which increases the pressure in the stomach and slows down the emptying of the stomach. As a result, stomach acid and food in the stomach will stay in the stomach for too long, which will also trigger the symptoms of acidity and heartburn in pregnant women again. Therefore, stomach acidity and heartburn in pregnant women may be more obvious in the first 12 weeks of early pregnancy and late pregnancy, so you should pay attention to eating small and frequent meals and eating less stimulating food.