Are you having a "fat day"? I have those days... as well as "OMG, my hair is bitchin'" days, "these pants look awesome on me" days, and "I did my make-up really cool" days. <br />
You just say, "okay, having a fat day. I can't lose 10 pounds in a day". And decide if you want to lose those ten pounds in a month. It's completely up to you, but don't make yourself feel bad about it.
be who you are and stop worrying about your weight we all come in different shapes and sizes, its what makes us unique.