Hi,
Your X ray report does not mention any specific features of cancer.
You have done an excellent job by quitting smoking. Please continue to abstain from it. You have all features of an infective episode, probably viral. You should take the antibiotic capsules, do steam inhalation and warm saline gargles for a couple of weeks. Please see your doctor for follow-up X ray as advised.
All the best, and God Bless!