Sazzy --Stoprelying on the scale so much, you could weigh yourself 10x/day with different results every time and yes even with a 5 lbs discrepancy between morning and evening. My suggestion is keep doing what you are doing you may just be on a plateau...
Here are some suggestions to get off the plateau:
1. Make sure you are eating as unprocessed as possible. Don't eat too many of those Lean Cuisines and such, they are loaded with sodium, which will make you retain water. I find when I eat a lot of salads with legumes I have a better week all around.
2. Eat 5-6 meals/day, this too revs up your metabolism. I know for myself if I wait more than 3 hours in between meals I am so ravenous that I grab whatever is easy to make and eat it.
3. Intensify your workouts. If you are doing 4mph on the treadmill bring it up a notch to 4.2 with an incline for a couple of minutes, then back down to 4mph with no incline till you catch your breath, then up again, do this a 4-5 times during a session, and you'll be burning more calories and fat.
4. Add some weight training to your workouts. Muscle weighs more than fat but looks oh so much healthier and better with the added bonus that it helps burn fat too. (see the pic in my siggie Muscle vs Fat )
5. Make sure you drink your water...
Hope this helps....
Oh I forgot here is are some links to a discussion there was a while back on the scale ...
http://www.3fatchicks.com/forum/showthread.php?t=51927
http://www.3fatchicks.com/forum/showthread.php?t=53052
Ok, now I can go...
