PC,
Firstly you are only 1 year post Tx and most of us continue to recover from the Tx alone for 2 + years so calm down a bit. Your body both physically and mentally have been through a lot in the past 1 1/2 years so please give everything time to adjust and to heal. I will guarantee you by this time next year you won't have the same thoughts or concerns as you do now, I know I didn't.
You never said what was the suspected cause of your cancer. Tobacco,
HPV or the Head Scratcher? If you used tobacco I certainly hope you don't now. If it was
HPV you can PM me for my X rated suggestions. If it was the Head Scratcher then I have no idea.
Try and keep a positive attitude and try to get back to your normal life as quickly as possible.