What Causes White Spots On Tonsils With Headache?

Recently, I have noticed white spots on my tonsils. They are painless and mainly on the cracks and crevices of my tonsils (which have always been irregularly large). Due to this, I often have to manually extract tonsil stones that I find in the crypts with a Q-tip. These are not tonsil stones. Again, my tonsils do not hurt, though I have recently been suffering from fatigue and headaches.