Hello and welcome to the forum. Appreciate your question but we're sorry that you are having this discomfort! Sincerely, it is important for you to see your doctor. There are other explanations besides GERD for this type of pain (which yes, even with taking otc medications could still be a possibility) but you could be suffering a peptic ulcer or irritable bowel syndrome. I would see your doctor to discuss either of these possibilities as they are treatable. I would also suggest a probiotic taken daily. And looking into other things that can help. Such as losing weight if that is an issue for you, changing diet, eating earlier in the day and smaller meals. Have you been to the doctor yet?