My teeth are yellowing after brushing and mouthwash?

Your hygiene is excellent. I'm assuming you either drink alot of dark soda, coffee, tea or smoke cigarettes. Mouthwash and toothpaste have very little bleaching material. I recommend less colored food or drinks in your diet and crest whitestrips for 2weeks. If this does not whiten then the best results will come from a prescription whitening only available thru your dentist!