Not able to breath

My Husband has his first vaccine of pfizer on the 22/10/2021, he seemed fine, until 5.30am the next day when he woke not able to breathe. After a minute he came too, he said it felt like he was suffocating and he had lost all colour from his face, looking deathly white. He is a fit and healthy 42 year old male with no health conditions.

Is This NZ Based or Overseas? : New Zealand