Lizzie don't worry about your blip. If you think about how the diet works, it's basically a calculation of using more calories than you consume. So even though you might have had more than you used yesterday, you still have three more days where, if you keep to the diet, you will keep losing. Onwards and downwards!!
I know the feeling about having nothing to wear. Looking in the mirror and thinking I look awful in everything, no matter what. For work I feel so frumpy in my baggy clothes when slimmer girls have lovely figures and look nice. I've sat in tears at home before nights out, not turned up to parties and dreaded going to places where people haven't seen me since I've put so much weight on. I always think they'll be whispering to each other, "ooh hasn't she got fat?"
The other side of this is, nobody really notices. Nobody really cares. Your friends and family and OH love you just the way you are, which emphasises what I'm trying to say- you're doing this for you, and nobody else. I don't really like the diet, because I adore food. But I love the feeling of being slim more! I can't wait to look in the mirror and smile, and to go out feeling confident and happy.
Whatever your motivation, remember that you're doing it for you.