If you have been diagnosed with acute sinusitis (bacterial infection of the sinuses) and bronchitis (inflammation of the lungs), you will need to be treated with a course of oral antibiotics, nasal wash with salt solutions and nasal steroid sprays. It may take up to 2-3 weeks for an acute sinusitis to resolve completely.
I would suggest visiting an ENT Specialist for an assessment. It is quite likely that a nasoendoscopy will be required. This involves passing a small scope through the nose under local anaesthesia to look for signs of sinusitis.
Other common cause of a persistently blocked nose include a deviated nasal septum (crooked wall that separates the nose into a right and left sides) and a swollen or enlarged inferior turbinates (sausage-like bony structure at the side walls of the nose that can swell up from exposure to things that you are sensitive to).
These conditions can be detected on a nasoendoscopy and the appropriate treatments can be recommended to relieve your nasal blockage.
Hope this helps and all the best!
