All of your questions are best answered by your surgeon and / or oncologists. The quick answer is that once you know what your course of treatment is, this forum can better respond to your concerns.

Treatment and subsequent reaction / responses to the treatments vary somewhat from person to person. But its all based on what the treatment entails.

Do you have an appointment with an ENT specializing in the treatment of head and neck cancers?

Has a date been set for CT / PET Scans?

Have you talked with the ENT office to verify any details needed to be addressed prior to you next appointment?

Is your health coverage in order and aware of the diagnosis?

Have you set up a support network of people to help with the day to day issues while you deal with becoming cancer free?

These are what you need to address now.