I went from 175 to 172 in one week my first week of eating healthy. So I lost 3 lbs in one week since it was my first week everyone would say it was "water weight". Now I still weigh 172 3 weeks later so I havent lost any more but I am exactly the same weight now so Im just so confused if that was "water weight" does that mean that I have kept the "water weight" off or does it mean I have lost some fat too?