From the National Cancer Institute, the 7 warning signs of cancer are--
C- Change in bowel or bladder habits
A- A sore that does not heal
U- Unusual bleeding or discharge
T- Thickening or lump in breast or elsewhere
I- Indigestion or Dysphagia (difficult or painful swallowing)
O- Obvious change in wart or mole
N- Nagging cough or hoarseness
Radiation definitely is carcinogenic. You'd best get it checked out. If it turns out to be cancer, search for answers by looking outside of the medical field, in the area of alternative medicine. There are hundreds of methods to heal the body, and drugs only suppress the issue (not heal it). Most disease issues are internal because the blood carries toxins that accumulate in the body. The system needs to be cleansed (colon and liver especially), and given nutrition.
Cleansing the body is a method I've seen done many times with success and it doesn't matter how old you are. We must remove toxins. One strategy is detoxifying with herbs, water, and juice fasting. One must educate oneself.
"The Cure for All Cancers", ISBN 0963632825
"The Cure for All Advanced Cancers", ISBN 1890035165
"A Cancer Therapy", ISBN 0882681052
"Oxygen Therapies", ISBN 0962052701
"Hydrogen Peroxide--Medical Miracle", ISBN 1885236077
"The Natural Cure for Cancer--Germanium", ISBN 0533071410
"Killing Cancer", ISBN 0705000966
"Natural Cures 'They' Don't Want You to Know About", ISBN 0975599518
There are many other good books about surviving this disease, and you should know about this option, even if you choose to go the traditional route with it's abysmal prognosis. Best of luck.