HEADACHE EVEN AFTER TAKING TREATMENT.

Hello doctors! My dad had a shock so we admitted him in a hospital. Now after treatment he is okay, but still he is having headache, he says there is mild headache still. For surety we have already took appointment of a doctor in Delhi. But that is like after a week,until he is taking medicines from here the hospital in my city. I have his report which was done like before treatment and most of the people we asked they said it's a small problem and it will be solved. I just want to know that the headache happening to him is normal. Let me tell you I asked him that where is his head paining which he said in the right side of the forehead, Please doctors I really respect you as I should, I have attached the report that I was talking about, please have a look at that, and tell me if I should fasten visiting another doctor. He is taking medicines but lil headache is there. Please, please, please tell me.