When i sit or stand i feel like my body moving why is that and which specialist should i consult . ?

Dizzy: Is wise. To always run your medical concerns with your primary physician (general practitioner, internal medicine, family medicine or gynecologist). They may help you decide if further evaluation with an ENT ( head and neck) or a neurological evaluation with a neurologist is necessary. Although benign most of the time, dizziness or motion sickness warrants medical attention . Best of luck.