We sold our house and I was wondering if was done legally

My ex-husband and I decided to sell a house we were not in the closing together supposedly the paperwork was that you sent to Tennessee now I come to find out that everything was not above board with the proceeds of the house . I come to find out 18 months later that my husband's my ex-husband's new wife got a third of the money for my house what is the best way to handle recouping the money I was scammed out of what is the statue of limitations on that