It sounds like a lot of your symptoms are being caused from your nose problems. I would'nt be surprised if you were suffering with allergies too. They can make you dizzy, tires and just make you feel awful.
Will you be seeing an ENT, or have you already done that and that's how you know you have a deviated septum?
i saw 2 ents already and i knew about it when i had my mri and my nose it very crooked so you could tell right off that bat