Chest pain for 3 - 4 months. Are normal.

I have been suffering from chest pain ( below the throat in the middle point and behind the ribs ) while walking a little far or when in tension .The pain is very congestive in nature and seems that i shall die immediately ..i also suffer from diaphoresis..the pain gradually relieves with rest..i also noticed that during empty stomach if i walk the pain do not occur but if i eat or drink tea before i start walking then the pain starts.initially i thought that it may be due to gas problem but now i think the reason is something else. my age is 28 and also my BP is little high 130/90 but it raises to upto 160/90 mmhg during stress and tension and my weight is around 76kg and hight 5'5".kindy help me...i have done echo ecg (after taking rest)but both are normal.