Well, off the top of my head -
- What do your workouts consist of? What kind of cardio (duration/intensity/etc.), what kind of lifting (circuit training / high-intensity / high-volume / etc.), all that stuff.
- Your calories seem very low. You're a 190 lb. man - your body needs way more than 1800 cals just to get by. I'd shoot for somewhere around 2400-2600 calories a day, and maybe a little more clean fats. Your body is eventually going to start hanging on to fat if you don't give it enough fuel.