Naynay,
I guess it could be but there are a lot of other things that could be triggers too. Do you know what type of headaches you get? I get migraines and some of my many triggers are: hormone fluctuations (beginning and ending of period), food (MSG, some preservatives, some food colors, too much sugar; some people trigger off of aged cheeses, chocolate, wine, etc), too much sun and/or dehydration, or stress. Having a diagnosis and knowing what sort of headaches you get may help you figure out what is triggering your headaches.
Good luck figuring it out!
Lisa