Hi, Shari. Sorry to have to tell you this but your floor is permanently damaged. You might be able to repair white water stains in your floor since that is only in the finish. Once the damage has gone from that to dark/black stain, you have to remove or replace the wood. Since you already talked about calling a pro, I am going to guess that you should go that way. It will be a big and difficult job to do this and it requires some level of experience.