How much Protein are you getting? Does MFP show you a pie chart of where your calories are coming from between Protein fat and carbs? If so, what are the average percentages?
Are you getting in all of your Water?
My best guess is that, if you just started going to the gym two months ago, your body is right now trying to adapt to the increased level of activity. Most people experience a slow down in weight loss when they take up exercise. Keep up your activity level and maybe try introducing more high protein Snacks to curb hunger.
When I started exercising intensely around 4 months post-op, I had to add a morning snack to my regime (a reduced fat cheese stick), because I was getting hungry between Breakfast and lunch. I also added a little granola to my afternoon greek yogurt, so the little bit of extra carbs would help fuel my late afternoon workouts.
