Sore Throat.

Here is my sufferings:
i live in chicago illinios, usa ( suburban area ) so it’s 6 months winter here around 30 f.
During winter time the heat has to blow continuously in the house that usually makes the throat dry.
After a bad sore throat a year ago, following a bad cough that lasted couple of months I had continuous symptoms like feeling that my throat is swollen (lymph nodes ), and sore ( no need of pain killer ) , frequent throat clearing, minor burning sensation, occassionaly lumpy feeling.
I had several visits to ent and had a complete course of levaquin ( antibiotics of floxecin group of medicines like cipro ) and penicilin. So no question of infection.
Flexible lyringoscopy found nothing unusual except that mucus stick on the back of the throat and reddish throat.
The ent had a doubt on gerd and allergy. I took nexium for couple of months and not much help.
For allergy he prescribed lotradine(antihistamine) 10 mg (otc), zyrtec® (cetirizine hcl), and nasonex nasal spray(mometasone furoate monohydrate) etc which did not help.

Do you also suffer from nasal discharge if so it is watery or thick and yellowish?
Not much. Sometimes it is thin yellowish.
Do you suffer from sneezings? Worse on exposure to dust, smoke, cold, odors etc.?
Occasionally.
Do you have any nasal blockage? Worse day or night?
Late night to early morning. One at a time. No daytime blockage.
Do you feel mucus falls from the nose into the throat?
Yes even if my nose is clean I feel lumpy throat some kind of dripping/discharge.
Do you feel there is any throat irritation?
Once in a while itchy throat. Continuously feel that my throat is swollen and sometimes I do not like to wear round neck cloths which touch my throat.
Are all the symptoms worse on intake or exposure to cold?
The symptoms come and go away. I guess the answer is yes but not 100%.
Do you suffer from cough? Is it worse during day or night?
Not now...
Is it productive? If so what is the color of the phlegm?
I have thick/sticky mucus. I have to clear a throat quite a lot.
Do you suffer from breathlessness too? Does it disturb sleep at night?
No.
Any other symptoms you can note?
How is your appetite, thirst, urination, bowel movement, perspiration, menses, sleep etc.?
Appetite is good. Bowel movement is ok (2 -3 times a day). Perspiration is not much since I live in cold weather. Sleep is good except that I started snoring.
Any other illness you suffer from, and if so what is the medication you are under?
Any past history of significant illness?>
any family history of similar illness?
What are the investigations done and what do the reports indicate?
I am sure there should be some homeopathic medicine that would help me.