The nasal septum is a plate of bone and cartilage along the center of the nose. A deviated nasal septum is shifted to one side. When your septum is deviated there is less space on the side that the septum leans towards. Generally this area is squeezed.
A deviated nasal septum may cause blockage of the sinuses on that side to the point that the sinuses do not drain as well. This can cause swelling of the nasal and sinus passages. As the sinuses become swollen, the drainage openings that lead from each sinus into the nose become blocked. Both the swelling and the mucus that collects in the sealed-off sinus can cause pressure. This is a possible explanation of the headaches and congestion that you are feeling. The mucus can drip down the back of your nose making your throat sore. It can even end up in your mouth. It can also end up in your stomach causing your nausea for the early part of the day.
The goal of treatment is to decrease the swelling in the nose and sinus openings, so that sinus drainage improves. Nasal decongestants or combination antihistamine/decongestants may help with this. Please discuss these medicines with your doctor to determine which would be most helpful for you.
A nasal wash helps remove mucus from the nose and sinuses. This can temporarily reduce symptoms of sinus pressure. This may also eliminate your need to spit several times to clean out your mouth in the morning. A prescription nasal steroid spray can decrease nasal swelling and mucus production. This will prolong the decrease in sinus pressure and improve sinus drainage. A nasal steroid spray does not provide immediate relief of symptoms. It may require several weeks of routine use to become effective. To help the nasal steroid spray work better, use it regularly after doing the nasal wash. Please read our Nasal Wash MedFact at http://www.nationaljewish.org/medfacts/nasal.html for more information about this technique. Share this information with your doctor to see if doing nasal washes regularly would be helpful for you.