My 74 year old mother fell off a bench and hit the back of her head very badly. Since then she has never felt well about 3 months. Her blood pressure is over 220 and no medication is working. They have tried 4 different kinds and doubled up with 2 at a time. They continue to look at her heart and blood tests. I am afraid she will have a stroke and have asked for a cat scan on her head. No one will listen. What should I do??