geez, give OP a break everyone. Your phone is good as these things are actually fairly indestructible. I have seen people with their home button missing and pieces missing from the front glass to have the back camera exposed and they still work fine. That being said, get a case. I drop my phone all the time with a case (even a simple one) and the glass has never cracked.
The iPhone 6s is especially safe from destruction because it is practically waterproof as well (Apple added adhesive to keep the screen on and I guess water out)