yoyo weight

It sounds like you've plateaued to me - in which case, anything that will shake your body out of what it's "got used" to is a good thing. Try keeping your calories the same but eating different things from usual, especially if your weeks food is generally set in stone. Porridge instead of muesli for breakfast, veggies you haven't had in a while, lean meat if you usually go for soya protein, that kinda thing.

Another thing to be aware of, though, is that your weight on the scale might be staying the same whilst your measurements/body fat percentage falls. Have you measured your waist etc. recently? It might be worth finding a scale that will measure body fat percentage for you and writing down the number. Unfortunately, unless you took your measurements before your weight stopped dropping, you're not going to know if that was the case this time but it might help you get through any tricky parts in the future.

BUMP :explode:
I've been recommend to try TDEE -20%
This will up my cals ! :noway:

Whats wrong with upping your calories? With 20 lbs to lose, you should only be aiming for 1/2 -1 lb per week max. If you exercise, you need more calories. Don't think about it as upping your calories, think about it as actually fueling your workouts. Your body is probably just fighting your because you are under eating. if you workout only 20 minutes a day but do it 6 days a week, set your account to lightly active and then do not eat back exercise calories. But most women I know your size eat around 1500-1800 + calories a day and lose weight. I can tell you, as a man, I lost more weight at 2600 than I ever did at 1800