My husband and I worked for 3 days leveling and preparing the ground for our 24' x 52" intex metal pool. We checked for rocks and any other debris and thought we got it all up. Today, while in it, I felt something semi sharp hit my foot and when I pressed down, it feels like a rock. Not sure how sharp it may be, but it feels like there's a point. What's the chance this will poke a hole in the pool? And if it does, what do we do??? We JUST got it filled and ready to use for the summer! Help?!?!