A pain on the left side of my chest, below the breast off and on for 1 month now seems to worsen after i eat anything. otc drugs not working?

GERD?: Sounds like Reflux of Acid. If you tried Omeprazole and Pepcid (famotidine) AC without help talk to your Doctor. May avoid spicy cheezy and Fried food. If you are exercising a lot, like upper body strengthening or weight lifting; may you pulled a muscle and having pain with certain movement or deep Breathing. Try to rest from those strenuous exercise for a week.