Sorry to have my first post here be a negative one, but I joined for positive support, right?

I started SBD 3 days ago after having given up bread for nearly a week. Today has just been a constant struggle, though. I woke up and was incredibly hungry, but was going to work out and had no yogurt or low-fat cheese in the house. So, I ate 1/2 of a cheddar cheese stick and drank some water, went to work out, came home and ate the other half and then went to work. I had breakfast with a student of mine which was actually really great - eggs and turkey sausage. I had a couple of other meetings, then headed home for lunch.
Sounds okay... well, once I got home (a short walk away) I was just totally uninterested in food. I couldn't bring myself to eat a salad or anything. So I had a couple pieces of turkey and headed back to work with a tupperware dish of celery and peppers and a bit of veg dip.
So, I'm frustrated because I'm not hungry for the types of food that are allowed... but something like a big ice cream cone sounds fantastic. It's got to just be the cravings starting to fade, but because I'm hungry I just can't get it off my mind.
Another thing is that I appear to not have lost any weight after 3 full days. What gives, and how long did it take some of you go start really losing the weight?
I'm also frustrated because I seriously pulled a muscle in my shoulder this morning while working out. And now I am supposed to go to a cardio-kickboxing class tonight with some friends and am starting to get overwhelmed by all this physical activity

Is there anything I can do to get hungry?

You can eat a little bit of "fatty" food (as a reward) knowing that you will behave well at all other time. Sorry about your shoulder... hope it will get well soon. The key to weight loss is not to give up! Good luck.
to all of you!