What to do with shattered iPhone 6?

Today my phone took a hard fall and shattered, sadly. But luckily the phone still works but the bottom half of the screen is covered with cracks (think black ones) everywhere but the top only has a few thin cracks. I can't get a new phone for another 6 months so is it worth getting my screen replaced or should I replace it myself or is there a special screen protector that I can use to help it out. Right now I threw it in my old lifeproof that I was stupidly not using so it won't cut my fingers, but is it worth getting it replaced, or is there a screen protector that I should try that will fix the cracks? Thanks to anyone who helps me and sorry for my terrible grammar

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