Whats going on with me?

When i was little i used to have these moments where my heart would race and my breathing would quicken. then after a while i would start having these weird moments during that where i would feel really claustrophobic and then everything would start spinning and look they were moving really fast. then when i told my parents, when ever they talked it sounded like they were screaming at me. after crying an curling up n a ball on the bedroom floor cuz i couldn't take all of it they took me to the emergency room but everything had stopped by the time we got there. after that these episodes kind of gradually went away and i haven't had them for years until now. there slowly starting to come back and its starting to really scare me that something could be wrong with me. does anyone else know what could possibly be going on?