IMHO, I would do the following:

1. Stop the cheat day(s)

2. Go back to Atkins induction. If your intent is to lose and not maintain that should help. Maybe the cheat day worked in the past but now you have to try something else.

3. Increase your cardio by 20 minutes per day, first think in morning before eating any food.

4. Drink more water

5. Limit your sodium intake.