Why my nose is always stuffed? i'm not allergic at nothing as far as i know. what could it be?

Nose congestion: Nose congestion can be caused by several problems. Even if you don't think you have allergies, you could have them. Other causes of nasal congestion include a deviated nasal septum, enlarged turbinates, nasal deformity, nasal polyps or dry nasal crusts among others. Best way to get to the root of the problem is to see an ENT specialist who can make the right diagnosis and treat the problem.