Don't stop moving just because the scale has. Checking 'numbers' (such as the scale) can be extremely discouraging. Try to focus on other factors instead, such as:
How am I feeling?
Are my clothes fitting me better? (You may lose inches rather than scale weight)
What can I do now that I wasn't able to do before? Push-ups, run longer, lift heavier dumbbells, etc.
No matter what, please don't stop exercising!!!