Just some suggestions, try if you like.
Cut the nuts.
Add in more green veggies, especially to your salad.
Add fats and calories.
When lower carbs and calories and fat aren't helping you lose weight, maybe, just maybe, more of each will help.
Depending on how strenous your exercising is, you may be having too few calories for your expenditure, making your body hang on to it's fat.
You also may have gained some lean muscle mass, have you taken your measurements? You did say your clothes weren't fitting better but sometimes you can lose in strange places.
Eating less and getting more active may have resulted in losing lean muscle mass. You may be getting some muscle back as a result of eating adequate protein.
So many variable, so little time.
How about weight lifting?
Beth