We are wondering about this pain . Her ear , The whole side of her face , her jaw area and she is suffering with terrible headaches . Basically the whole side where the cancer is . On top of all this she has nausea and dizzy spells . She has only taken one Chemo threatment so far and is due for her second one on the 17th . Could this be side effects from the chemo treatment causing all this pain ? We asked the MO and was told it could from the treatment or it could be the Cancer itself causing all this pain . I sure hope it's not .