Hello,
I think it's great that you posted here, rather than just running to the nearest chocolate cake! To me, that's progress right there. Yes, maybe you're stuck w/ your weight, but if you weren't doing this, you'd probalby be gaining, which would be much worse. However, who can blame you for getting frustrated when you're putting forth such an effort and not really going as far as you'd like. First, it's possible that you're getting thinner, but that it's just not showing on the scale. Muscle weighs more than fat, so it's very possible that you're retaining water (especially if you are strength training). Second, I agree with one of the above posts: it's important to switch up your workouts. Try doing something totally different. For instance...do interval training. Start with a slow cardio speed and then do a sprint for about one minute. Recover by going slowly and then, after 2 or 3 minutes, do another sprint. Continue this for 35-45 minutes (whatever you can do) and then, you'll see some results very quickly. Be sure not to eat more calories, as you might think it's alright since you worked out, but then, you'll be eating the calories that you just burned off and you won't see results. Finally, are you counting calories or points? Maybe if you're doing a certain diet plan, maybe it's not working and you need to find another. You WILL lose the weight, but you might just need to tweak things around. Remember, the main thing is consistency...it will pay off over time. If you cease your efforts and turn to choclate cake, you will not reach your goal and that won't make you feel any better.
I wish you lots of success