What's it like when you have a panic attack?

Yesterday i went to the doctor's and she told me that i had anxiety disorders. What's it like when you guys have panic attacks?? I would like to hear from people who have had real life experiences with them, because i don't want to feel alone about this because nobody i know has panics attacks. For me, it's like i feel very exposed to everything, and i get random chills and i just want to cuddle up in a ball and hide from the world. My heart does not beat very abnormally fast though, but i do feel waves of nervousness rushing through my body, and i get all shaky and tingly and lightheaded and dizzy and i feel helpless, like i am about to die and nobody can save me. Every person's experience is different right?