Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that you are suffering from
Sinus infection causing
Sinusitis and it is mostly bacterial in nature..
The symptoms of clogged sinuses, and difficulty in breathing seems consistent with Sinusitis..
You should consult an Otolaryngologist and get evaluated and he can advise you investigations like PNS VIEW x rays to rule out the exact cause of the problem and treatment can be planned..
If Sinusitis is confirmed as diagnosis he can advise you antibiotics like
Augmentin, Anti-inflammatory painkiller like Ibuprofen or Naproxen, decongestant Oral and nasal like
Phenylephrine, steam inhalation, and using a humidifier in your room..
Saline
nasal irrigation and warm compresses around nose can also help.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.