A week ago had a panic attack for the first time in my life what can i do?

i went to the emergency room at the hospital thinking it was my hearth but the doctor say my hearth is fine and the rest too.. but i have had them 3 times in a week and i get really scare like if am gonna die or is my heart.. my hands get tinling and face.. chest preure.. hard to take air and i get really scare like if am gonna die.!! what can i do.?? please help me here to deal with this.. i dont wanna take medicine. THANKS!