Your symptoms could be due to worsening gastroesophageal reflux disease (GERD). GERD is caused by acid produced in the stomach, which refluxes up into the lower part of the esophagus, causing irritation and heartburn. Usually certain foods are bigger triggers for the problem than others, including alcohol and spicy foods. GERD symptoms are often worsened during pregnancy; this happens due to elevated levels of progesterone that are in the circulation during pregnancy.
Progesterone causes relaxation of the muscles, including the muscles that make up the sphincter between the lower esophagus and the stomach. As a result, it is much easier for acid to reflux up into the esophagus. You should talk to your Ob/Gyn doctor
about these symptoms, as they are very common complaints of pregnant women. Fortunately, there are strong and effective medications that are available and safe to use in pregnancy.