Thanks everyone for taking time to make these comments. They are really helpful...I've been re-reading them for a couple of minute because their so smart and really put things into perspective.
I think South Beach is a great plan, and I've learned a lot about good carbs/good fat, but I think I gave up my ability to do a restrictive diet after the Slim Fast fiasco. I'm going to take what I've learned and incorporate it into a new eating plan that's not so restrictive. I'll lose slower and figure out a way to be OK with that, but I have to get rid of these food panics. I'm looking to start a family in a couple of years, and I am NOT going to pass on my anxieties about food to my kids.
What is my ultimate goal? Great question, since I've veered away from my original goal. Or, more likely, I partially achieved it and haven't gone back to reassess my situation. I started out with the goal to cut sugar and processed foods and exercise for health. I've achieve both, lost a little in the process, and here's where I changed my goals without fully admitting it to myself. Because I've now been looking in the mirror and thinking "Wow, I do look better...if I lose more, I'll look even better and eventually I'll stop wondering how people look at me." So partially vaniety (I want to look good...although by who's definition of good, I'm not sure) but mostly getting rid of that voice in my head that says people treat me different because I'm overweight. Plus, my mother is coming to TX to visit in 3 weeks and will immediately ask me how much I've lost.
Amanda- thanks for the perspective you gave me about my work and exercise schedule. I hadn't thought of it that way, and that's exactly what my body might be doing. I think I'll ease up a bit on the exercise and see what happens. I'm still going to take my running shoes w/ me to DC, and I found a Curves near my hotel, which will give me a good chance to take a break from the conference (or maybe I'll go shopping

).
OK, enough analysis
Thursday-
B- out with friends, had a mini cheese omlette w/ queso and 1/2 a whole wheat pancake, light on the syrup.
S- almonds
(didnt' have lunch because I was full from brunch and got into my work at the library)
D- grilled chicken strips, zucchini and onion stirfry, and a ceasar salad
S- sugar-free fudgicle w/ peanut butter
No exercise- stayed at the library until 6:00 then went home to watch season 3 of 24 on DVD...major crush on Keiffer Sutherland! Is he the cutest or what!