hello and welcome to HCM,
I do understand your problem and have concern for the same.
You need to understand that a good doctor will try to give you a medication which may not give you immediate relief but is safe for long term use so that your body will not have any permanent damage. Unfortunately many of the pharmacist though knowledgeable will give you medication which though give you immediate relief but may not be good for long term use.
Anyway, what you have is an acute case of sinusitis
and you need to get treated with a strong antibiotic like amoxycillin-clavulanate
625 mg twice daily after food for five days and an anti histamine
like levocetrizine 5 mg once daily after food for two weeks. Your doctor will know about these drugs. You also should take steam inhalation at least twice in a day for five days.
After you feel better you need to get an ENT consult and get an endoscopic evaluation and as well as CT of the sinuses
so that you can be given a better and permanent cure.
take care and get well soon
Dr Sriram Nathan