with spacing out I am afraid are not symptoms to be taken that lightly. They might be indicating particular type of epileptic seizures called absence seizures. Association of these two symptoms warrant a CT scan
of the brain and electroencephalogramme, to study and monitor electrical activity in the brain., The chest pain
described with tiredness
deserve at least, a chest X ray and blood tests to exclude anemia, measure markers of infection and inflammation.
Its of utmost importance to especially for the headaches and spacing out a neurologist
who shall be better placed to do an overall and comprehensive assessment of your clinical signs and symptoms.
Think this should be of help,