Could i have died/ passed out? i think i had my first anxiety or panic attack 2day. my bp during this episode was 151/100 pulse 134. bp normal later

No, you didn't die: No you didn't die, but you could have passed out from anxiety. Your blood pressure and pulse were elevated but still bearable -- especially in a healthy young 30 year old woman. If troubled with anxiety ; panic attacks, please see your physician for general evaluation. Also please consider working with a psychiatrist and/or psychologist to address your anxieties. Good treatment is available.

Checkup is in order: Highly doubtful that you died. A physical checkup is order if you have not had one recently. There also should be mental health evaluation. Depending what is determined, psychotherapy may be helpful or/and possibly medication for a panic disorder if there are recurrent symptoms. There are various relaxation techniques which may be incorporated into a psychotherapy approach.