I agree with several other posters. 1/2 a pound lost is NOT an indication of how much fat you've lost. Even if you'd been down 6 lbs in six days, it's still NOT an indication of how much fat you've lost. When we lose weight, the daily fluctuations up and down on the scale reflect water weight. If after months and months there is a downward trend in your weight, THAT indicates fat loss. So I wouldn't worry too much about daily fluctuations.
Also, I agree that you are eating a lot of sodium (you're consuming a lot of very processed foods, like the fast food and any prepackaged food). That will make you retain a
lot of water, probably several pounds. You could be losing fat and not see it on the scale for some time.
Also, from what I've read, WLS is not the easy way out. It is difficult, and you'll have to alter how you eat forever (much like non-WLS weight loss). It's not a fix-all, and it takes a lot of work. There's no magic bullet for weight loss. It takes time, effort, and sometimes it sucks (and sometimes it's wonderful).
The "fast weight loss" at the beginning of diets is usually due to water weight being lost, not fat. And with a lot of salty foods, you won't see that.
I'd recommend taking a deep breath (trying to lose weight can induce some mild panic sometimes!), and then doing light research on a way of eating. If you want to eat mostly processed foods like you are now, I'd recommend calorie counting. It's much easier to overeat accidentally eating cheesy soup and snack wraps than it is grilled fish and roasted veggies.
Best of luck! I hope you find something you like that works for you.
