This seems to be purely allergic .
Allergic can be controlled with some medications and some precautions.
U have to take some precautions to control your allergy .
Take Anti histamines
Consult your near by ENT doctor if symptom persists
They may examine you to check for any sinusitis or any other related issues
Health Tips
Avoid cold foods
Change your pillow cover and blanket once in three days , wash with hot water and dry it in hot sun
Clean your AC filter once in 10 days
Avoid food which cause allergy to you .