My Brain Feels Like It Is "moving Around". I Feel

My brain feels like it is "moving around". I feel pressure in different spots during the day, and it is never consistent. Sometimes it feels like it is "balling up" like a fist, then it relaxes. The only peace I get is when I fast and take vitamin C. It seems to have happened after I had a urinary tract infection. The antibodies did nothing and my bladder and kidneys hurt. When I stay hydrated it helps but it does not go away. Please help