Take your measurements-chest, waiste, hips, thighs, biceps, calves-just everywhere you can wrap a tape measure around. Keep a journal of all them and measure yourself each week. Sometimes when the scale doesn't move you actually have inches lost.
Here are some links about why weight isn't the best way to tell how you doing.
http://www.3fatchicks.com/forum/sbd-...cales-lie.html
http://www.lhj.com/health/fitness/10...s/?esrc=nwdt28
http://exercise.about.com/od/weightl...tlosstrack.htm
Keep doing what you're doing and you'll eventually see success.
Sarah