Help with my phone

[GuilhermeGS2]

Guys, yesterday at night I dropped my phone, when I picked it up, I see a blue stripe in the screen. I didn't know what do, so I began to tap in the screen (in the right of the screen, next to the power button), then the spots on the screen began to change. But it is getting worse, and sometime the screen is completely black, so I hit the phone some times, and appears a blue stripe in the top of screen. I don't know if the problem is in LCD or may be with any flat cable (if exist). Anyone can help me?? I'm afraid to lost my phone.