Over the past six weeks or so, for reasons that are hard to get round, I have averaged about 5.5. hours sleep at night. I feel burned-out, tetchy and overwhelmed on a daily basis. However, I find it very hard to lie in at the weekend - when I sleep past about 8 am, I feel groggy and have a headache. My ideal sleep pattern would be between 10pm-6am. At the moment it is about 12.30 am -6 am, sometimes even less. Will I get ill if this continues? I have a disabled son who struggles to settle and gets up some nights, but also have to get other kids up for school. Today I feel light headed which is worrying me.