Are you on flex or core?
If you're on flex are you making sure you're sticking to your daily points with healthier foods?
If you're on core are you sure you're only eating until satisfied?
Are you drinking enough water or at least tracking your water intake?
When you say you get 7,000 steps a day, is that total or is that just while exercising? I've heard that 10,000 is what people should aim for. (not that you should just jump up to 10,000 steps out of the blue)
Were you eating salty things recently? Sometimes it can be a little water weight gain.
It's only one week. So, go over your tracker (if you haven't been writing everything down, it may be time to start) and simply look over your last week. You may find a couple of things that could be changed/improved.
Patience. You will get there.
