My gynecologist prescribed an estrogen, but I have been afraid to take it because of the cancer risks and the weight gain attributed to this hormone replacement therapy. I have used progesterone cream. It seems to help sometimes, but the terrible headaches and nausea return. It is always a good idea to discuss symptoms such as chronic headaches and nausea with your private physician. Nausea related to menopause is not widely recognized, but I have seen and consulted on a number of such cases.
Headaches related to menopause appear to be more common.
Unfortunately, the connection between menopause and headaches is not widely recognized and they are treated as two unrelated conditions. Women experiencing increased pain, such as headaches, or increased agitation of any body system, such as nausea may have a progesterone deficient menopause type. In my experience, menopause related nausea and headaches are often related to a progesterone deficiency. It may be because progesterone opposes the action of prostaglandins, substances that increase pain and inflammation symptoms such as headaches and nausea. Some types of PMS respond well to progesterone for this reason.