So... I used to be a real bad migraine sufferer but they have eased up in the past years. For the last week or so i've had these horrible headaches. I know I can take regular strength tylenol but i don't want to take any medicine while pg (although i have on a few ocassions) Why do we get headaches while pg? Could they be a cause of high bp? So far by bp has been good. Also, how often should we take tylenol (or not) or should we just go by what the dose guide is (i would obvioulsly do that anyway) How much is too much?