Why is my touch screen function not responding

I dropped my phone a few ahours ago. The fall was not that bad, I just fell off my lap when I stood up from the couch. I tried to restart it thinking the screen was frozen but when the phone restarted it was still the same. I still get messages, the up down home and power buttons all still work but the only thing I can't do is get a response when I touch the screen. It's like the whole thing still works fine its just the part of the program that responds to touch that got corrupted. Is the any way to fix this without an expert? I also tried the volume up+home+power but all that gets me is a screen shot so m guessing it isn't inbuilt. Please help, 've never gone this long without a phone