So in an effort to protect my new iPhone5 I put it in my front shirt pocket instead of the dirty table or have it at risk with being hit by stray chips(was playing cards) Of course 3 hours pass and I go kneel over to pick up a chip and my iPhone falls from my pocket. Hits a rack (some hard plastic thing), and the back now has a scratch on the bottom glass. Didn't shatter or anything, but I want to know what's the best possible way to prevent it from like....spreading? I don't want it to spread out and like end up cracking that whole piece. Maybe it won't.... I am not too sure what could potentially happen. I do have AppleCare+, but it seems silly to go use it now, since I literally picked this iPhone up 2 days ago. Visually, I can just put it in a case and forget about it, but I Just want to make sure it just wont shatter on me sometime later down the road.