hi, i'm 19 years old. over the last two days i have fallen asleep at night and i believe about 15-20 minutes after i fall i asleep i wake up and it's moderately hard to breathe for a few seconds and so i sit up and take a few deep breathes and it's so irritated that i need to cough. but after about ten minutes it's fine. and i can sleep through the night without any problems.

maybe it's nothing major, but i'm concerned about not being able to breathe for those few seconds. i have never experienced something like this.

please help.