Could having allergies cause a weird lightheaded feeling daily 24/7 for 6 yrs my ent tells me no n that it's not inner ear by talking n looking at me ?

Yes, it can: Allergies blocks the ostia's of the eustachian tubes located in the nasopharynx by causing inflammation and as a result of this secretion building in the eustachian tubes put pressure to the balance organs located in the inner ears. This pressure can give you a weird lightheaded feeling. Try some otc decongestant like sudafed and antihistaminics like zyrtec (cetirizine).