I had this at the age of 41. They thought I had strep (it wasn't), told me I was very sick and ignored signs like severe swelling. Finally, one night when I could no longer swallow my own saliva (I was inhaling it instead) and felt so much pressure in my head I thought my head would explode, I took myself to the ER. I came out of sedation and off of a ventilator five days later. My trach healed a few weeks later. It was a scary, scary event.
Don't mess around with this. From the time that my throat first started hurting to my airway closing in the ER requiring an emergency tracheostomy, it was only five days.