Phone cracked and have colored red lines?

I have a rather small crack on the upper left top of my iPhone 5c screen I noticed that there was some glass I tried taking it out using my nail but suddenly my phone started showing red lines across the screen I can still use it but this bothers me so much since I have changed my screen so much does this mean I have to change the screen/lcd panel? Or is there any way i can fix it
I don't know How this happened I simply just tried to remove some glass from the crack

If you are seeing weird coloring on your screen then the LCD may need to be changed, but if there are no dead pixels(just the red lines, but otherwise all the pixels are On) then it may just be loose wiring, go and give your phone for repair, do what the technician there at the service center says, I can't really diagnose the issue without seeing the phone over the internet.

But it sounds like the glass, screen guard(if you don't have one, then get one) & internal cabling connections to the screen may need to be changed(it's easier just to swap out the whole LCD, which is probably what they'll do, it should be covered by warranty)

Next time apply a screen guard(it protects the screen in Most cases, they're easier & faster to replace than the actual screen) and don't pull stuff out of the phone, just give it in for servicing, lest you aggravate the issue causing further damages.

Good Luck with your phone! Backup all sensitive and important data before you take it to the store so that you don't lose anything.