Girl, I just ordered one of those scales from ebay myself. I am excited to get it. Right now I use the scales at my work and at the gym.
Anyway...I was reading what you've been eating and doing for exercise and that's bullshit that your weight went up. This is what I think:
1) it has something to do with TOM
OR
2) you are putting on muscle
You cannot have added fat to your body if you have been eating and exercising like you say you are. Your scale does give you body fat percentage, right? What is it saying about your body fat percentage? Also, maybe you should get a tape measure so you can take your measurements. Sometimes a person is putting on weight (i.e. the scale is moving up) but they are losing fat and gaining muscle, losing inches.
Also, your goal body that you are trying to get back looks great. I used to have a really, really nice body. I was actually a stripper, and not that I would want to go back and do that again (dealing with desperate horny men is SUCH a treat), but I definitely want to be in that body again. It makes such a difference in my self-confidence when I look in the mirror nude and see something nice. haha too much information? oh well... i know you know what I mean!
But you WILL get back into that body, just keep at it. And also, by the way, you have a really pretty face from your pictures. Just thought I'd let you know.