Red sensitive palate, fullness in ears, and swollen glands at back of ear, can it be a fungal or candida infection in my mouth?

See your doctor. We can't properly diagnose nor treat you over the internet. These types of situations require you to see your own physician for a proper diagnosis and appropriate treatment, if necessary. What you describe is not typical of oral fungal infections although you may have that in addition to a cold, etc. Call your doctor.