I hate the scale

I officially want to throw my scale out the window.  I want to see it shatter into a thousand pieces.  I've gained four pounds since yesterday.  Four pounds?!?  How is that possible?  I've cut out sugar, white flour and fried foods.  I drink a ton of water and I'm walking at least 30 min almost every day.  I'm going to chalk it up to water weight gain, and shrug it off, but it's soooo hard!