I've been feeling breathless quite often and my gastroenterologist advised me to cut out salty, spicy, and oily foods from my diet and to take a PAN L tablet in the morning. It's been 10 days since I started this diet, but I'm still having the same symptoms. I'm worried if this might be a heart issue, though my echo and ECG came out fine three months ago. Could it be something to do with my lungs? I'm really anxious because sometimes I feel a heaviness on the left side of my chest, and at times my heart rate suddenly increases. My vitamin B12 levels are normal. I'm not sure if I should stick with this diet or consult someone else. Can you guide me on what to do?