Hello Thanks for your query. I will try my best to provide you with best possible professional recommendations to your questions. Your symptoms are suggestive of gastritis. Advil contains NSAID which it self can cause gastric discomfort. I advice to avoid spicy food and smoking , alcohol for few days. I advice you to take proton pump inhibitors which will decrease the acidity and relieve your symptoms. You have to take the drug twice a day 1/2 hour before consuming food. Also you can take antacid syrup. You should consume this drug for 7 days. Yet again, I do hope that you have found something helpful and I will be glad to answer any further query. Regards