Possibly hormones: Hormone changes in pregnancy can often give you headaches. They can also be muscle tension headaches from stress. If they persist you should talk to your ob.
Answered 4/2/2013
5.2k views
Vascular changes: Yes. Being pregnant causes hormonal changes that change your body's physiology including your blood pressure. Headaches are a common complaint.
Answered 1/27/2015
5.2k views
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