I think this is pretty normal or at least it was for me. Just remember this is a tool not a fix all. I was eating way too much in the first three weeks as well even though I was still losing weight I am sure I could have lost even more had I been a little more mindful of my intake. It is not that I ate large portions it was just that I sometimes made poor choices & ate at McDonalds because I was in a hurry. This is a learning lesson to change our eating habits for life and sometimes it is hard. I am doing better now eating more eggs, fish, chicken breast, fruit, salads, etc.. I am hardly ever hungry and when I do get hungry I make a protien shake with 8oz milk and it is very filling it keeps me from over eating, high in protien and low in sugar and calories. I don't deprive myself I just change things around a bit. I used to love having a Venti Mocha every morning from Starbucks now I have a tall bold pick with cream no sweetener. It saves me calories and money and I still feel like I am getting a treat and if I haven't had breakfast I will get the lowfat turkey bacon and eggwhite breakfast sandwhich (don't usually eat all the bread). Again, this is a process and when the pounds start really coming off you get motivated and really want to make an effort. I track everything on www.myfitnesspal.com it is free and their data base pretty much has everything in it. It makes me more mindful when I take a look at what I have been eating. Good Luck and don't get discouraged because many have been where you are at and you are still doing good you have already lost over 15 lbs that is something to be proud of! You will do okay, especially after your first fill.