I have seen an ENT and had a CAT scan. The result was that I had a slightly
deviated septum and could have surgery, but he said there's no way of knowing whether or not it would help. Also, he said that though an allergist will test for common allergins, it's impossible to test for all allergins, so that could be a cause as well. I do not have the money to pay for surgery, especially if there is no guarentee it will even help at all.