Hey,

Have you had any colds/flu at all recently or anything viral as these can cause nausea. Could you be pregnant? Or do you have anything like ibs. There are sooo many other things that can cause the same symptoms other than what you are thinking. Most of the time even anxiety can cause the same symptom but im not saying it is anxiety. Generally nausea and light headedness aren't typical of brain tumors as from the research ive done and being a nurse typically peolple get horrible headaches, have issues with their eyes. Has your doctor look in your ears? Because could also be an ear infection or balance issue xx