please don't worry. my husband had an unexpected panic attack in august, it was really frightning , please don't think something bad is going to happen, IT'S NOT , after a couple more attacks a doctor prescribed diazapan, now then before you say "i'm not having any of that!" it has been a god send, he has'nt even finished the packet, it is just a case of knowing you have something in your pocket to help you through in case of another attack. People suffer from these for many different reasons, stress,worry, or feeling life is too much to cope with, see your doctor, even just for a chat and reasurrance, i hope you are feeling better tonight , try not to dwell on last night too much, rebeccaxx