Headaches can be an annoying part of pregnancy and are mostly related to hormonal changes (especially during early pregnancy), infections (cold), migraines, allergies, or tension headache. However, they can also be a sign of PE, but usually not before 20 weeks gestation. But I doubt that a headache is a sign that you will develop PE, but you can definitely ask your doctor. When I asked mine, he told me that due to the different reasons for a headache, it cannot be used as a reliable indicator for PE.
How is your BP? As you are not mentioning it, I assume it is just fine?
The headache you are describing sounds a lot like mine. I just saw my doctor today (I am 29 weeks and well into the PE timeframe) and he believes it is sinus irritation of some sort or allergies. I have no other symptoms that could indicate PE or HELLP (BP good, labs are fine, urine is clear, no blurry vision). The best relief I get is from sinus rinse with saline solution, tylenol and claritin.
Let me know what your doc says tomorrow. I would be curios to hear.
MC 3/2009 and 3/2011Henry
(1/1/2010-1/7/2010) - forever loved and missed; severe PE with Hellp; partial placental abruption, classical c-section at 25.6 weeksMatilda
(Nov. 2012, born at 35.4 weeks) - severe PE
Our pain has been put into words, placed into empty cradles, to remember that all our babies lived, that they mattered and always will. - Field of Cradles http://www.fieldofcradles.org/