Early pregnancy headache, dizziness, the main reasons are as follows: 1, it is possible in the early body hormone level changes, including early pregnancy reaction caused by discomfort; 2, sleep disorders during pregnancy, can also cause headache; 3, if the headache is particularly severe, or even accompanied by severe vomiting, this situation should be promptly to the hospital to investigate brain diseases, if necessary, do magnetic or CT to exclude intracranial lesions; 4, there may be blood pressure changes during pregnancy, mainly may be elevated blood pressure, the main reason is to increase blood pressure, the main reason is to increase blood pressure. If there is a change in blood pressure during pregnancy, it may be due to elevated blood pressure. If it is caused by high blood pressure, timely follow the doctor’s requirements to take measures to reduce blood pressure, may get better relief.