Welcome To HealthcareMagic forum!
You are suffering from Hyperacidity
,And many times Gases also cause Left side pain. Hope You are not Hypertensive. You should plan an ECG, which will crystal clear the picture.
Hyperacidity can be permanently cured through Homeopathy
,Spicy Food & Anxiety
, consume plenty of water,chew properly,Eat frequently small meals.
wish You good health