Thanks for providing more information.
Sorry for late reply and inconvenience.
Firstly I want to assure you that chances of HIV infection are very low in your case.
Out of the 8,00,000 accidental needle stick injuries only 2% of the needle do have HIV viruses on them & out of this 2% only 0.2-0.3% do have HIV infection.It is very less.
And it's good to have negative HIV blood test results after 2.5 month.
If you are still worrying then you can go for repeat HIV testing at 6 months after the exposure.
Now as you have recurrent episodes of upper respiratory tract infection so other possible causes may include Sinusitis, Allergy, Nasal polyp, Nasal deviated septum.
So a clinical examination by an ENT specialist should be considered which gives you a proper diagnosis and treatment.
In the meantime you should take OTC Claritin.
Also you should drink plenty of water and vitamin C rich juices.
Avoid spicy, fried, fat rich food, caffeine, alcohol, carbonated beverages.
Do steam inhalation and saline gargles.
Do nasal irrigation which may be very helpful in your case.
For further reading -
Spray with nasal saline several times per day.
Avoid over-the-counter nasal decongestants. They may help at first, but using them beyond 3 - 5 days can actually worsen nasal congestion.
Use a humidifier.
Elevate your head side of bed.
I hope this helps.
If you have any further query then feel free to ask.
Positive feedback and bonus are highly appreciated.