I've been having really and headaches for a while then i hit my head and got a concussion & it's gone but i still have terrible head aches ?

See a doctor: You may need a headache work up to include a CT scan to make sure there is no sequelae from the trauma or other issue. You will also learn the differences in tension headaches versus migraines or head trauma.

Headache: How do you know you had a concussion and the concussion is now gone when you still have a headache? Please seek medical attention and neurologic examination.

Please see your: doctor within the next 24 hours. This still could be related to your concussion. You need to have a neurologic exam if you haven't already and a follow-up one if you have. With a concussion, you also want to make sure you're resting physically(no sports/exercise) and resting your brain (which generally includes no screen time, i.e. computer,phone, TV, schoolwork) until all your symptoms are gone.

Headaches common: Headaches are the most common symptom of concussion. For most people who have had a concussion, if headaches occur they go away after a few weeks. In some people, headaches can persist even if all other symptoms of the concussion get better. If this happens to you, it is important to undergo a neurological examination. Regular sleep and safe exercise are essential for resolution of headaches.

See neurologist: After concussion some will develop "post concussion headaches", generalized poorly localized headaches. Usually nagging but not terrible. Others will develop trauma triggered migraine. See a neurologist for diagnosis and management