Can be useful to take digestive enzyme supplements during pregnancy to relieve symptoms such as heartburn and / or constipation and / or gas / bloating?

It is unlikely to take extra digestive enzymes to help with the symptoms of heartburn, constipation, gas or bloating UNLESS the person has a deficiency underlying digestive enzymes. Change the type of food you eat, the meal size, body position during and after the same etc.. may relieve some symptoms. A gynecologist or a gastroenterologist can evaluate you to determine if your symptoms are typical of a pregnancy.