Please consult a physician/cardiologist at the earliest for assessment. If you are currently having chest pain/heaviness, significant breathing difficulty, sweating, dizziness/fainting, severe weakness, or pain.
The frequent bowel movements after junk/processed foods may be related to food intolerance, acidity, or a gastrointestinal condition, but that cannot explain away the chest symptoms without evaluation.
Meanwhile, avoid excess caffeine/energy drinks, very spicy/oily/junk foods, and large late-night meals. Keep a food-and-symptom diary and maintain regular meals and hydration. Once a doctor rules out any cardiac or other medical cause, we can address the anxiety, digestion, and diet-related triggers appropriately.
Health Tips
Please don't self-diagnose this as anxiety or gas, particularly because you have experienced chest symptoms along with breathing difficulty.