Hi. Thanks for your query and an elucidate history. Noted your history of feeling of tightness in the neck, feels like rubber, swollen throat, tightness behind the ears,feels like bubble n swallowing, and so on. MRI of the neck will be the best to differentiate any disease better than X-ray and Ultrasonography. Continue the antibiotics add on anti-inflammatory medicines something from the stress that you must have as per the symptoms you have noted. Clinical evaluation by an ENT will help further .