What can an obgyn do to treat chronic headaches during pregnancy when high blood pressure isn't an issue?

Your symptoms: From your symptoms your OBGYN can determine what type of headaches you are having and may be able to determine the appropriate medications to help relieve them. You can help by knowing exactly where it hurts, the characteristics of the pain, alleviating and aggravating events etc. Different types of headaches are treated differently so the more you know about your headache the better.

Need more info: Treating chronic HA requires knowing type of HA (migraine, tension, cluster, etc), HA history, trimester, other medical conditions, on Folic Acid, drug allergies, clinical course of HA's since pregnancy began, & compliance issues. Choices are limited since most HA regimens carry no better than a Cat. C rating (meaning WE DON'T KNOW how the drug affects preg), There is SOOTHEAWAY device. Google it.