Need Help of Diagnosis (Gerd, Cough, Phlegm, Neck Pain, Derealization)

Hi, i hope that i can find answers here to diagnose what I am having, in case anyone can help.. I will be explaining some symptoms that might / might not related to each other but i am continuously having a new symptoms. It all started around 1 and a half months ago
Week 1 : i felt sudden discomfort on my right jaw just in front of my ear lobe until near my chin and each day there's a new developing light pain and discomfort around my neck (feeling lumpy) to the back of my ear until it feels like migraine on my right side of head and lightheadedness. Then I went to the doctor who later gave me pain relief since it might be related to muscle / sinus. He did checked on my neck and felt there's no swollen glands. And after browse online for symptoms, little did I suspect I have TMJ

Week 2 - i still felt discomfort and tiredness (might be due to lack of sleep and anxiety), then after i met some people during working, on the next day i had sore throat and cough with green phlegm. My feeling of the discomfort on the neck keeps developing and felt like my neck had this kind of swollen glands. Then I went again to the same doctor, who later gave me antibiotics and didnt check further on the neck since the doctor think it might be the cough I am having and can develop the swollen glands also suspected I have sinus. (For the record, cold / flu for me has been happening quite often, like almost once in every 1 or 2 months over the past 1 year).

Week 3 - I took the sinus scan after my 5 days antibiotic has finished which resulted I have nose bent which might trigger the easy flu. And the doctor prescribed me again with another antibiotic since my sore throat / cough still a little bit there with a bit of greenish phlegm. However I still can't get past of the discomfort on my neck (lumpy feeling) and jaw. But the doctor requested me to visit ENT.

Just on the next day, suddenly I felt like breathing difficulties, especially after I drank coffee, and after I eat, or riding a car for quite some time.

And i finally visited ENT (2 days after I visit the last doctor) who checked my ear nose and throat with the standard ENT equipment, said that everything's okay and i might have Acid Reflux (GERD), the doctor also use his hand to check on my neck and said its fine no lump.

Week 4 - Then after a week, I still have sometime breathing difficulties and cough but not often. I visit another ENT who have a little deeper checking to my nose and throat and still think that my phlegmy coughing could be resulted from GERD and gave me only 1 med which related to allergic and asked to deal with my mind.

Week 5 - I have cough again but this time I just buy manuka honey umf 20+ to eat it daily and expextorant, it felt like helping my cough.

Overall til now I still felt on and off lumpy feeling on my neck, jaw to back neck shoulder discomfort light pain, lightheadedness, dreamy kind of feeling, and developing farsightedness (unable to see clearly for near readings which i am planning to visit eye doctor since I am at my 40s).

In case anyone have the same symptoms with me, hope you can share how to be cured. Thank you for reading.