OK, based on your activity level and statistics, you burn about 2360 calories a day on your own. If you want to lose 1lb a week, you should shoot for eating about 1860 calories a day, and if you want to lose 2lbs a week you should shoot for eating 1360 calories a day. 1.5lbs a week would be 1610 calories a day. Now you don't have to eat exactly this every day, but this is just an average you should try to shoot for over the long run to achieve whatever goals you set for yourself.
Is there any way you can write down the calories you are eating, making sure you account for portion size and whatnot?
Also, I'm curious as to what your typical meals consist of, as maybe there is some room for improvement there as well.
If you want to get really serious we can also help you figure out an ideal amount of protein vs. carbs vs. fat you should try to consume as well.