Hey evryone thanks for the answers. If this new anitbiotic doesnt work ill talk about a possible fungal connection. But to know that sinuses can cause the fogginess issue makes me so relieved(thought it was a tumor at first). My doctor said it isnt. I have some sinus rinse i used it once yesterday. it was really uncomfortable lol. Forgot the name of this new Antibiotic but each pill has 500 mg. in it so its huge and hopefuly it will work. Once again thx for the answers.