My advice to you would be to stop weighing yourself at home. Seriously, it can be a real problem: I nearly threw the towel in on week three because according to my scales I'd gained a pound.
I came on here ranting and stressing ... a very kind and wise member gave me that advice; I took it and gave my scales to my sister to look after. On my official weigh-in day at my CDC's house, I'd lost 4lb so I got all stressed out over nothing.
The only weigh-in that counts is the one at your CDC's so why put yourself through the torture of wondering why you've gained / not lost / not lost enough when you don't even know the score yet?
It's also easy to become obssessed by the scales ... I weighed myself every time I walked into the bathroom - it was a road to nowhere good!!
Some people like the reassurance weighing at home gives (and they are both controlled and philisophical about it - unlike me) and some have to weigh themselves because they can only get to their CDC once a month but in general, it's just an extra worry you don't need.