Help possible heart attack?

k first off im a healthy 18 yr old male. I have had 2 ekgs and blood work a I am perfectly healthy with no family history of heart disease. I am also I am perfectly healthy with no family history of heart disease. I am also medicated for anxiety. Ok so ately I have been getting alot of pains in my chest and random shooting pains in both arms mostly my left one. What could this be and what is the possibility of me having a heart attack could this be and what is the possibility of me having a heart attack oh and.i dont smoke or have family history or any other risk factors