I read your question carefully and I am sorry about the symptoms you are experiencing. Looking at your description of headache with nasal congestion, facial symptoms etc it seems that it is a clinical picture compatible with sinusitis which would explain all your symptoms. It should naturally be confirmed by imaging studies. Treatment consists initially through decongestants to try and drain the nasal cavities. If that is not enough or if there is greenish discharge indicative of infection a course of antibiotics might be necessary. I hope you will get better soon.