Hi Stylebygina, Thanks for writing your query. Headache and swelling is common after head injury due to soft tissue injury. Headache can appear after some time of injury and persists for prolong period for days to weeks. depending upon the severity of the injury. You should feel concerned and consult a Neurophysician if following symptoms appear:- 1. Persistent headache 2. Nausea or vomiting 3. Loss of conscioussness 4. Loss of memory 5. Bleeding from nose or ears 6. Visual disturbance 7. Loss of balance of body 8. Episode of convulsions 9. Irritability or confusion In addition to above symptoms, if you feel anything abnormal in your body, you should immediately consult your doctor. Take medicines only under medical supervision only. It is advisable to take proper rest for speedy recovery. I hope this is helpful to you. Thanks.