Thank you for your query at AskTheDoctor.com
I understand your concern.
Sore throat, coughing and sneezing points towards an upper respiratory tract infection. Since you have it over 4 days, it is mostly due to a bacterial infection. Normally such throat infections start as a viral but eventually superadded bacterial infection develops.
You can get your throat examined by your physician. A good antibiotic here will be Amoxicillin or combination of amoxicillin and clavulanic acid ( Augmentin ). For the sneezing and coughing, an anti-histaminic like Levocetirizine can be taken once at bed time.
Hope this helps,
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