im 15y my first panic attack (?) was 4 months ago, i was normally on my notebook and felt my arms heavy, i ran to the living room and was crying afraid of dying, because i felt i was going to faint and i didnt feel my arms, it was it for 2/3 hours, then until this day i get anxiety stuff but mainly now its because when i eat i feel sleepy, and i get scared of passing out or dying while sleeping, what if the blood will not go to my brain anymore? now the anxiety is getting afraid of passing out

 never passed out in my whole life and it looks so scary, what if i pass out and wake up on a hospital with something serious?? or i dont wake up?? what if its something serious and the help will take a long time to came and i die?? and i feel like disassociating too

today i have to go to school and i cant get calm, i have PE today, what if i have a heart attack and die? is my heart okay i never went to the doctor to see it, this mystery is awful, i want to cry again, i know its anxiety i know when i get worried i get worse but the thought of passing out or dying is so bad, i cant stand up because what if i pass out

 i remember of the history of teenagers having a heart attack and dying and i feel like im next

the only way to stop my anxiety is going to the doctor but i cant without my mom and she doesnt care at all and say its all on my head, but how do i stop it them? how to convince me im not gonna die even the silliest it looks like? say some statistics of the reasons people of that age would die? and the chances?????