Anyone else suffering constant splitting headache? I'm about 12 weeks and I've had a headache for most of the past week. I keep desperately trying to drink more liquids and stay hydrated (I seem to need about 3x as much liquid as usual) but the headaches just don't shift. I'm utterly bloody exhausted, too, and feeling like a fat pathetic useless blob at work, really really struggling to keep on top and remember everything I need to. :(