QUICK IMMEDIATE IGUANA HELP. HEART ATTACK.?

PLEASE SOMEONE ANSWER IMMEIDIATELY, I CAN BARELY TYPE RIGHT NOW. MY IGUANA JUST WENT THROUGH WHAT I THINKJ IS A HEART ATTACK. I DON"T KNOW SHE STRETCHED OUT HER NECK HER HEAD,. THEY BOTH WENT UPWARDS, sTRETCHED OUT HER DEWLAP AND WENT INTO LIKE DEFENSE MODE OR SOMETHING. BUT HER EYES WENT COMPLETELY GREY, HER EYELIDS COVERED THEM. IF ANYONE CAN PLEASE TELL ME WHAT TO DO. WHEN HER EYES WENT GREY, SHE WAS COMPLETELY IMMOBILE, I GRABBED HER TO CALM HER DOWN BUT HER BODY WAS JUST SO LIMP LIKE DEAD. PLEASE SOMEONE HELP, I CAN'T CALM DOWN.