Panic attacks or heart attack?

For the past 3 weeks I've been having these weird attacks... I've went to the ER 4 times and to my doctor once. Ive had 4 or 5 ekgs and blood work dine 2 times... I just had a huge attack, my left arm went weak... my left jaw started hurting and my cheSt and left arm still hurts... it comes and goes.. but I'M 17 and I'M 6'1 and 165 pounds... so Idk about a heart attack but I do have all the symptoms of a heart attack... I can usually tell when these attacks are coming because my jaw will hurt and I'll get this weird feeling in my stomach... I get sickish after them... my doctor said its anxiety and panic attacks but I can't help but to feel like its something much much worse...