I don't have a scale at home either. They have a digital scale at work that we are using for our weight loss challenge. It is there all the time so I will continue to use it once the challenge is over. I am a terrible scale person. I will weigh myself quite often if there is one available. So this way I will not be so tempted because it is at someone else's desk they will know when I use it. She is the weight recorder for our challenge also so I don't feel weird if she sees my weight.
By the way...I am sure that you did lose some weight if you are noticing bones you didn't before. Maybe not an exact amount based on two different scales but congrats anyway!!!