I'd probably add in some more carbs to the last couple meals in your day. Carbs are what's going to give you the energy for your workouts and allow the protein to do it's job building that new muscle you're looking for.
Also, Pasta, Breads, Simple Sugars from Yogurt aren't the carbs you need. You're body needs some solid carbs from vegetables & high fibre, nutrient dense foods.
Examples:
Vegetables & Fruits (A Wide Variety), Brocolli, Asparagus etc...
Yams (Sweet Potatoes)
Whole Oats
Do you know the amounts you're taking in each day in grams?
Carbs? (To Me, it looks like this is your problem area)
Fats?
Protein?