You are in the most common stall that there is... the "three week stall" that happens to almost all of us. Go up to the top of the vst page, in the search bar and look up three week stall.
Also, you will go through a "surge" of hormones. I don't remember when nor how long it lasts, just that omg I am so f'n hormonal, I felt like I was crazy. Just know this - it too shall pass.
Change your perspective. Concentrate on your "levels" .. by that I mean protein, how many oz of water you get in, etc. You will have many ups and downs in this journey and through out each trial, you will learn how to best equip yourself for the next hurdle.
You CAN do it! And the weight's going to start zooming off... watch. If I could, I'd bet money on that. And I'm not a betting woman... Hang in there sweetie!
OH and I (for a while) only allowed myself to weigh every Monday morning. Otherwise, it drove me nuts. Now, I don't care what the scale says as much. It varies (for me) up to 5 lbs a day depending on the time of the day. Limit scale time to once a week if you can!