That's Right. I'm Going Abroad

So in a matter of weeks I will be studying in Bath, England. That's right. I'm going abroad. Just a little late. My biggest concern at the moment? I've heard from several sources that you tend to lose weight when you do the ASE program--mainly because you're walking everywhere, but probably also because you tend to cook all your meals at home (restaurants are so expensive) and that's usually healthier. Why is this a problem you ask?
Already, I'm down to one pair of jeans that fits me well, and another that's only slightly too big. If I lose weight, I will have no fitting jeans. Still not seeing it as a problem?
Clothing in England is generally priced the same as it is in America, meaning that a $50 pair of jeans that you'd buy from a Gap in America will be 50 pounds in an English Gap. The dollar sucks right now, it's about 1.91 to the pound, so not only will anything I buy be pretty much raping me, but I most definitely cannot afford to buy jeans.
And yes, you should be thinking I'm totally ridiculous right now, either for complaining about the prospect of losing weight or for thinking this much in depth about the problem of having my jeans not fit the way I like.