Max, you will need help to get thru this so please dont delay too much with discussing this with your parents. I know if it were my son I would want to know and help him.
Anyone who offers their assistance to you, write down their name and number and tell them when the time comes you will let them know what they can do to help you.
Seek out a second opinion at a top notch cancer center. This is very important! You want to go to the biggest facility that has the best reputation for treating oral cancers. I think there is a link on the main pages for world wide cancer centers. I will try to find it for you.
I know a student who is over at Oxford for the next 3 months. her mother was a much loved member of OCF but sadly she passed away after her 3rd round of oral cancer. What country are you originally from?
Here is a link for world wide hospitals, not sure if these are specialized cancer centers or not. But maybe it will be helpful.
Worldwide Hospitals