For the past few years I have been tired every day. I have autism and a heart defect. This means that I don't have enough oxygen. I have recently downloaded an app called SleepBot that tracks ny sleep. According to the app I get 7-8 hours sleep but my sleep debt is only around 0 or -0, something. I just can't get past 0 no matter what I do. Today I'm so tired my eyes literally hurt. And I have also a headache. My doctor says that my heart works fine. What's wrong with me?