I just had a wonderful swim in my 2 week old pool. When done I was walking around the pool pulling the solar cover into place and saw sand next to a support beam. It wasn't there yesterday. I felt it and it's very wet. The dirt is wet as well. Should a brand new pool be leaking? Should sand "ooze" out from under the pool? How would I even begin to find the leak? I'm so upset. Is this normal???