Talk to Internal Medicine on Chest Pain And Systolic Blood Pressure Is High

I AM 23 years old my BMI is 30 and I am GERD patient too I usually feel left side little chest pain and my systolic blood pressure is always between 135 to 145 and disystolic is always normal last week I consulted doctor he takes ECG which is normal then he advised me thyroid test sgpt test lipid profile test which all comes Normal then what is the reason behind high systolic blood pressure is it due to my stomach problem or anything else and what further should I do my tongue is whitish form last 2 3 weeks and i always feel thirsty