How to relieve headache in pregnant women: a. Cold or hot compress, if tension headache occurs, both hot and cold compress can be taken, put hot towel or towel wrapped with ice bag on forehead, lower part of skull, if migraine attack, the effect of cold compress will be better. Second, take a shower. If you suddenly feel a headache, you can take a shower to relieve the headache, or if you do not have the condition to take a shower, you can wash your face with cold water. Third, do not be hungry or thirsty, it is better to eat less and more meals to be able to prevent hypoglycemia, because a common cause of headache is hypoglycemia. If you are busy at work or often travel, etc., you can put small snacks like cookies and fruits in your bag, but do not eat sugar directly, because this will lead to a surge in blood sugar. In addition, be sure to drink plenty of water to stay well hydrated. If a pregnant woman already has headache symptoms and has vomited not long ago, it is recommended to drink a little bit of water, avoiding large gulps of it.