Congrats on your success so far! Try not to let this deter your progress.
Unfortunately weight loss is not always a linear, steady process. There may be some weeks where you will lose, some weeks you maintain and even some weeks where you gain, but that does not mean you are doing anything wrong. Remember our weight is not a static number. It can and will fluctuate according to your diet, hydration, workouts and even hormones, but keep focus on the big picture. This journey is about incorporating life-long healthy habits into your life so that the results of all these new habits will be a healthy body.
Hang in there!