On May 13th I fell backward and hit the back right lower side of my head causing a bleed. I went to the hospital and they did tests and said i was OK. In the last two weeks I have had excessive pressure in my head and face causing pressure and depression. I went to the dentist thinking it was a tooth issue and they said to see an ENT. I have an appointment Tuesday, however, the pressure in my head and face are rather severe. Question is can I have a reaction from a head injury in May that would bother me now?