Hi Sarah,
Don't be disheartened - I figure that my body cannot lose weight every week, sometimes it's good to have a week where you maintain, and next week you'll lose again! You've done so well, you're really close to getting under 200lbs - one more week and this time next week we'll be cheering on your fabulous success!!
Why D - same thing to you, you LOST a pound this week, that's absolutely fantastic! Why are you sounding so down? You've done really really well! You don't need to 'start from scratch', you just carry on, because it's obviously working, you've lost 30 lbs in about 7 weeks, that's more than 4 lbs a week, the weight is just falling off you!