hi there, you seem to be suffering from rhinitis
which may be allergic in nature, and if your throat is iitchy then you are also progressing to get pharyngitis
which is not uncommon following a common cold
. If you do not have any symptoms like fever
with productive sputum or pain in the throat then you can just take some anti-inflammatory and antihistaminic combination, along with salt water gargle and some steam inhalation. Usually common cold subside on its own within 3-5 days. If you develov pain or productive cough then you may need to see a doctor and get some antibiotic prescribed. For the time being this should do. Take care.