Hi Dear ,
Firstly You did not mention your age. The symptoms that you are telling may be related to heart disease
and may be also related to gastritis
disorder. You must concern Cardiologist and must go through some investigation like ECG,TMT, Lipidogarm which are necessary for you. you are also addicted of smoking which is also risk factor for heart diseases. So you must stop smoking. You are also taking Birth control contraceptive
pills which contain estrogen, which can increase the risk for stroke, heart attack
, and blood clots
in some women. The risk is highest for women who smokes.