PLS DON'T WORRY ABOUT CALORIES or try empty ones only good for you like the FullBar. You are still breastfeeding and eating for two so eat when you are hungry because your body knows what it needs to keep the factory going -- lots of protein, lots of veggies, lots of complex carbs.
You need at least 2000 to 2400 calories a day to keep your milk rich and your baby growning and at least a gallon or so of water a day to keep producing. That's only around 600-800 more than what you typically need to exercise and lose weight and not shoot your body into a "fasting" stage. The water will also help with hunger -- you can drink a cup before and after the meal, and help you, your baby and your milk.
YOU'RE ALLOWED TO BE TIRED AND HUNGRY -- your body's processing your baby's food source, your exercising and keeping a routine and chasing a toddler.. the second for me was lightyears more effort and SO much to get a full grip on for the energy level needed, especially while I was nursing. SUCH CREDIT TO YOU FOR EXERCISING TOO!
DON'T LET THE STRESS GET YOU DOWN! You haven't shed all your pregnant hormones yet, your hips are still elastic, your belly muscles are still reforming -- of course you're self-critical and a little down:) Give yourself 5-6 months for your body to get over the past year's "hormone hangover."
DON'T GIVE UP AND DON'T GIVE IN! Keep up the good efforts for you AND your baby -- you are giving your baby the food s/he needs in the only precious time you can give it and will feel better and look better in just a few months without feelings of guilt for you or him/her:)
YOU GO GIRL! GO MAKE YOURSELF AND YOUR FAMILY PROUD!!!