Well there can be no doubt you are losing something lol, the inch loss proves that, and with all the excercise you are doing then you are going to be building some muscle.
Carbs could be the problem though. Its all very complex how the body stores fat and how you lose weight, but insulin production can be at the root of a slow weight loss. If you eat a diet high in carbs (which can still equate to low in calories) your body responds quickly by producing insulin. It then converts the carbs into glucose which is stored in the fat cells. If you eat a low carb diet you do not get the spikes of insulin. A diet high in protein and low in carb will produce a much smoother flow of insulin into the body, and will encourage your body to burn fat rather than use the glycogen.
Without seeing what your normal diet days food is, its hard to see if oyu are overdoing the carbs, but certainly on your 'off day' carbs were very present.
It may be worth taking a week or even 3 days on a no carb, or as low as you can manage to see if this helps with the weight loss. Be careful to choose foods like lean chicken and meat and lots of salad, and avoid any carbohydrate (bread potato pasta cereal sugar, any starchy vegetables) avoid fat if you can, a little bit of oil and vinegar salad dressing should be ok, but no salad dressing that is sweetened. Dont let yourself get hungry, eat more lean meat and salad if you are, and drink drink drink water. Lots of water is very important. Im pretty sure you will be pleased with the results even in 3 days.
Do expect some headaches though, so have some paracetamol handy, a sudden change to a low carb diet will definately trigger a few headaches, but this will pass after a few days when your body adjusts.