Yea man I am sure your doctor knows nothing, they only went through 4 years of under grad, 4 years of medical school, plus another 4+ years residency to get to where they are, their 12+years spent just studying science and medicine is irrelevant and your ability to read a list of generic symptoms that match a disease clearly outweighs their wisdom and knowledge. I mean it's not like they haven't seen someone with throat cancer before that they can compare to, I am sure they have only read about it.
Just think about man, there are clearly multiple things that can explain those symptoms. It's only logical to rule out less serious conditions first. Unless you wanted your doctor to stick an surgical device down your throat and take a biopsy, then send you straight away to chemo, before ruling out more common cause that could be healed with just time and some pills.