Sayang, please go see your doctor or go to the hospital today, chest pain and that tight feeling in your tummy at 23 weeks needs to be checked out properly, especially since the Gaviscon isn't helping. I know it's scary, but better safe than sorry with pregnancy, okay? Once the doctor gives you the all-clear, a few of us mums swear by eating smaller meals more often and avoiding lying flat right after eating, but that's only after you've been checked. Take care of yourself!