Do you have symptoms that remain after the headache leaves? It can take time for the brain to reset and recover after a migraine attack. For some people, they have left for hours or a couple of days afterward with a hangover-type of feeling. Difficulty concentrating is a common symptom and fatigue is another. Some people may find these symptoms are almost as debilitating as their other migraine symptoms. This is migraine prodrome and you may need to make allowances and give yourself time to recover by getting the help of a rehab specialist.