Hi there, I have been getting headaches constantly for the last week. I wake up in the morning and feel a bit lightheaded walking to work. I seem to get a pain behind my eyes mid morning and then it goes away sometimes until the afternoon and evening when it gets sore again but spreads round the back of my head (lower back of my head not neck). Throughout my working day I am really tired and yawn a lot. I should say the day before it started I did go out for drinks. I very rarely drink but I probably drank too much that one night. However this pain isn t a one day after effect as its been constant for the last 6days.