I think you got Viral infection.
Your upper respiratory tract
has been involved due to secondary bacterial infection.
If you had problem with Claritin-D,please stop the drug.
You can take Levocetrizine in combination with L-montelukast
for Allergy.You have to add a Macrolide
antibiotic which acts on respiratory tract and also a combination drug of Antiinflammatory and antipyretic
Please take bed rest and also rest your voice.
Everything will be alright
Wish you speedy recovery.