Life is like fat loss - it is never linear. You rarely see someone lose fat evenly week after week. It's always a big drop for a week or two. Then there's a plateau and then maybe another big drop, but sometimes the body gets stuck and plateaus at one spot for a period of time.
This can be extremely frustrating for anyone and this is when you need to stay focused and wait for the drop effect. The drop effect is the phenomenon that happens when your body is at a plateau and stays consistent week after week, until suddenly your body lets go and you drop more than a couple pounds in one week.
This goes a long way in keeping you motivated to stick to the plan, because you know that sooner or later the drop is coming, and even though you haven't lost any fat for a few weeks, your body will catch up.
It's like in life, just because you have decided to set goals for yourself, it doesn't mean that success will happen overnight. It requires consistent, hard work and there will be plateaus but if you can stick to the plan, just be patient and wait for the drop effect, success will be yours.