Is the medication working at all? The medication should be working in a while after taking it. Sinusitis should ease up when taking the medication. Sinus problems normally do not last a really long time. Do you get any weird feelings in the ears? Like popping or pressure, almost like in a airplane? There are many types of migraines that cause sinus problems, like there is pressure on the nose and popping in the ear. Another thing is do you smell things? Sorry for asking so many questions, I am just curious.