I'm on weight watchers, and I drink water and diet pepsi, because diet pepsi has the least amount of sodium out of any other diet sodas so thats why i drink it...but could it be stalling my weight loss?? I don't exercise all that much, but I am constantly doing household chores and once a week i go on the treadmill when i have time (i have a new baby), but the weight is taking FOREVER (it seems like anyway) to lose! Any tips or suggestions?

Because the diet pepsi has sodium, it could be stalling your weight loss.
Once a week on the treadmill is good, but not very effective. Losing weight is science. It takes 3500 calories to lose a pound of fat. That being said, a brisk, 4.0 mph on a treadmill for an hour will probably burn about 400 calories. That is way short of the 3500 calories you need to burn 1 pound of fat.
I do weight watchers too, but it's not based on losing weight by a certain date, since it's not calorie based, but points based.
So, if you are patient and can increase the number of workouts/week, you can do this on weight watchers.

http://willtaft.com/health/how-to-stop-d...
i bet if you just watch your carb's and exercise you will be fine.

ur doing fine