Yes you should be treated by antibiotics for your condition. Severe allergies can even dilate
your air pipes. Dont take head bath daily because it can aggrevate the sinus that you have.
It would be a good idea, especially if you are suffering and it is limiting your activity. Allergies can mask serious sinus infections and it may be time to go.
Yes, I would go see your doctor. There are many treatments aviable for allergies and sinus problems. These treatments include shots, medicine, and sugery.