hi, ive suffered from bulimia for 12 years, over the last few months its at its worst and im purging 4 times a day,for the last few weeks ive been experiencing left chest pain front and back, feels like its my heart, im also taking zopiclone for insomnia but im scared everytime i fall asleep im not going to wake up or have a heart attack when im awake. ive managed to get my purging down to once a day over the last few days, i really want to stop, is this my heart?. thank you