Continous headache from fall. For this?

I fell at home 1month back and struck my head to the wall. No blood came out and i went to a hospital for check up. I have shoulder pain and hip back from that fall. Doctor palpated my head and said there is no evidence of any blood clot or bump. So need to get xray or CT. He prescribed ketorolac im and some tablets. From that day im getting headache continously and my head is so tender to touch. I can feel pain when ever i touch my parietal scalp region. I work for a medical coding company and work continously for more than 15hours a day. So i thought watching system screen continously might be the reason of my headache. I want to know whether i have to get an xray or CT done? Or else is there any other reason for this?