Oral cancer. My personal journey

I have a PET scan at 10:00 today. I am worried and didn't sleep very well last night. I found a new lump under my chin last night while eating dinner. Pat could feel it too. It could just be tissue damage from the radiation. Anyway; I am concerned. I have been feeling as good as ever. I have gotten my strength back and have been working hard in the yard the last few days trying to get it ready for summer. Hopefully everything will be okay today. I will probably worry from now on every time I have a new ache or pain. I certainly hope not.