I have back head pain from long time and having symptoms like feeling nausea,while standing feels my body movement,while talking and during morning walk  feels brain fog,if i look downwards my body feels like frwd backwrd movement and pain in the toes if i look up it become normal,pain in the upper part of neck,sometimes time if i look sidewards blur for milli sec. Kindly suggest is there any problem like brain tumour? , actually i have vestibular migrane is this symptoms on this?