Acid Reflux / Hearburn?
here po:
https://www.whattoexpect.com/pregnancy/symptoms-and-solutions/heartburn-during-pregnancy.aspx
https://pharmeasy.in/blog/suffering-from-acidity-during-pregnancy-heres-how-you-can-manage-it/
ask advice from OBGyne sa tamang lunas ar pang-relieve ng pain / acid. ask if pwede ka mag-Gaviscon.