15 weeks and headaches

becca
Hey ladies, just reached 15 weeks and my morning sickness has finally gone! But now I have a new battle to face and that is day long headaches every other day! Woohoo lucky me :) anyone else having this? I am thinking it could be dehydration because I really am not drinking enough but also read there may be other factors some not so serious and some more so. Is any one else in this position?