I'm wondering if it was an actual panic attack or anxiety attack. There is a difference I get them both but anxiety attacks are more frequent for me then panic attacks which are seriously bad. When I have a panic attack I have trouble breathing, I get dizzy, it feels like some one stuck a knife in my stomach and is twisting it, I start to sweet, my heart pounds faster and skips beat, I feel like I'm having a heart attack and will die any second. That's a panic attack for me and I could not stay in a class if I had one. An anxiety attack is pretty bad too, it feels like some one stabbed me in the stomach with a knife, no twisting, my heart to speed up but it doesn't quite feel like a heart attack, I feel like impending doom any second, but am usually able to get thru it though I usually need to withdraw from people. I get moderate anxiety attacks the most, they feel like impending doom is about to fall upon me and severe knots in my stomach. I can usually stay in what ever situation I was in during this and fake it to some extent but I could still be visibly off by some people who are more perceptive. Can you describe your panic attack in class? Because if it was an actual panic attack, no self help book is going to do it, you will need medication.