If you changed the settings to your fitness and food trackers, we might have more to go on. Here are my questions:
(1) Are you tracking absolutely every morsel of food that enters your mouth?
(2) You mention bicep curls/triceps/crunches, but have you considered a formal, structured strength training plan (or hiring a trainer for a bit to learn more types of exercises)?
(3) Keep up the water intake. That's not too much, and it helps to get rid of food cravings and helps combat the feeling of hunger when you're actually just thirsty.
(4) Speaking of food cravings, I find that processed sugar is a trigger food for me. When I have the stuff, I crave more sugar and carbohydrates. Thus I try to limit my sugar intake to the best of my abilities, and I find it helps me to maintain a healthy diet.
(5) Instead of focusing on weight, focus on measurements (get a tape measure and measure your waist, hips, biceps, thighs, etc). If you can, get someone to test your body fat. I've been anywhere from 110-116 within the course of a few days, but my body fat stays about the same, so it's just bloat and water weight. Don't let the scale be your only means of measurement.
(6) I find that when I have goals (particularly small goals), I am able to accomplish more. Perhaps you should sit down and write out some goals, then write a plan to implement these goals.
I blog at www.fitnessfaythe.blospot.com -- check me out! :)