Black Spots on screen with colored lines

Hello,

I have been using my Macbook Pro for about 2 years now, and I have maintained quite good care of it. Accidentally, I shut my computer lid on a pair of earphones.

When I opened it back again, I found out that there were two black spots where the earphones were and colored lines. To test this out, I rapidly changed the screen. The lines that were working changed colors appropriately but it's not working.

What I have tried is:

- Applying pressure on it with a piece of cloth

- Using software that has rapidly color-changing pixels.

The next morning, I found out that the lines have spread, and now my entire computer screen had either colored lines or black rectangles and spots.

Can anyone help me with this, or do I have to replace my computer screen?

Everything else works fine, but just this.

My OS X is El Capitan.