Normal, belonging to the stagnation period. At least half a month to 1 month, your body is very thin, because there is no fat consumed quickly during this period, and you start to consider muscle transformation. Besides, we should eat meat, beef and eggs properly to ensure the body's intake of protein.
Don't worry, after this month, your body will start to lose weight, but it's hard to say whether you are thin or not, because muscles still have weight. So, from now on, don't look at the weight, look at the figure.