Lost voice due to allergy incident

I ate a dimsum that contained prawn by accident and shortly after my throat got really scratchy.

After the allergy subsided, I noticed that it has affected my singing voice. (voice sounded flaky & airy, voice cracks at high notes) so I stopped immediately.

I rested for a week, drinking plenty of water and did not drink alcohol or smoke or talk much during this time.

Today, I returned to my daily exercise for volume two. Did the exercises gently to assess my condition and found that....

While I can sing in my chest register, I noticed that I can no longer hit the higher notes in chest as well as transition smoothly into my head voice and back.

Seems like I have lost control of the vocal cords as it automatically yodels or breaks at the passaggio.

It feels like I have lost all progress and gone back to square one.

Has anyone recovered from something like this?

Would appreciate any tips or explanations on what is happening so I can understand how to manage my voice from here on.

Thank you!