Coke... hum seems like a remedy for everything: i got told to drink Coke to help with constipation! haha

I hate when people say that to me but... are you drinking heaps of water? I don't usually drink much water (Mum's nickname for me is "camel" because i drink so little !) but i've noticed that in the last couple of weeks if i don't get near 3L a day i get really bad dehydration symptoms, including terrible headaches that take ages to go away.