Mild concussion from hitting, my head last week,(not k/o). no trouble falling asleep, but waking up after 3-4 hrs. why? anything i can do to fix it?

Difficulty falling: asleep is often associated w/anxiety while waking up early and not returning to sleep is associated w/depression. Periodic waking is associated w/overall light sleep. Please see doc about concussion who may order a sleep study. A psychologist can help w/stress management. Natural treatment includes melatonin supplement but w/professional guidance. Stop all stimulants after noon. Peace&health.