Hi Tamara,
I'm sorry that you're here, especially at such a young age. I concur with the others that you should get another opinion. Have there been any discussions with a Radiation Oncologist? If not you might want to speak to your ENT about being referred to one for an opinion.
I have had radiation but my ENT said that it was only done because I had extracapsular spread from the affected lymph node. If it had not broken out of the node then I was given the impression that I could have avoided radiation and chemotherapy.
I guess it's possible that treatment regimes may differ here compared to the United States. Radiation certainly seems more prevalent as a standard treatment even in some N0 necks in the US than it is here. I'm from Melbourne by the way!
Good Luck,
Sue G