As of today I have lost almost 23 pounds including my 2-week diet. The first week after I was dropping weight so fast, and this week I haven't lost anything. I don't know if this is a stall, or I'm not doing something right. Is that normal? I'm getting really discouraged already.

Your "three week stall" has probably just begun a little early. I'd recommend staying off the scale for the first month. Your body has been through a lot, is trying its best to heal and adjust, and will naturally have some weird fluctuations for a little while.

Right now, you should be focusing on meeting your protein and water goals. Everything else will come in time.

Good luck!