The sudden onset of dizziness in the sixth month of pregnancy may be caused by anemia or hypertension or peripheral vertigo disease. It is recommended that the patient visit a hospital and have the relevant tests done to clarify the problem. It is recommended that the patient have a routine blood test to see if there is anemia. During the first six months of pregnancy, if the patient is malnourished or underfed, it may lead to physiological anemia, which may cause insufficient blood supply to the brain and lead to dizziness and blackness. If a patient has frequent episodes of dizziness with head swelling, high blood pressure should also be considered as a cause, and blood pressure should be monitored and controlled with medication as this is a dangerous condition. In the case of otoliths, the dizziness is associated with a change in the position of the head and lasts for a short time. In the case of Meniere’s disease, the patient may experience tinnitus and stuffy ears.