Not what I expected!!!!

This has been a super long week and not the one we were expecting.  I was hoping to be putting my house back together today but that isn't going to happen.  The short version of what happened is that they found some sags in the floors.  So they weren't going to put hardwoods on top until we figure out what is causing it.  The engineer came out and he thinks it's a water issue or slab issue.  So, we will hope to get some more answers next week.  He also said if it is one of those issues to expect to put the floors off for 3-4 months to let the house settle back.  ARGH!!