you've gotten some great advice. it might be time to go to the ER about this.
maybe they can get you referred to a neuro in a speedier time. or, try calling the insurance you've been approved for. tell them what's happening and ask how you can get seen as quickly as possible.

i have learned to swallow with my head tilted more forward. i also had a consult by my neuro to a speech therapist who evaluated me for choking and gave me some tips for eating/drinking. but you need a neuro for that.

DON'T have anyone slap your back when you're choking. it can actually have things go deeper down. please keep us posted.