The symptoms you're describing, including the presence of a small ball-like object under the ear in the neck, pain when moving your head, and discomfort in the pharynx during chewing, may suggest a few potential conditions, but it is important to consult a healthcare professional for an accurate diagnosis.
One possible condition could be lymphadenopathy, which is the enlargement of lymph nodes, potentially due to an infection or other underlying issues. Alternatively, you might be experiencing symptoms related to cervical musculoskeletal issues, such as muscle strain or a pinched nerve, which can cause pain in the neck and referred pain in other areas, including the throat.
It is also worth considering conditions like cervical spondylosis or thyroid issues. Given your specific symptoms, especially the sensation in your pharynx, it would be wise to consult with a physician or ENT specialist (ear, nose, and throat doctor) for a thorough examination. They will be able to provide a proper diagnosis and recommend treatment options.