Hi
i brush my teeth everyday and use mouth wash after
i had it for a few weeks
Its usually caused by a buildup of bacteria on your tongue. Especially common in smokers,so if you are a smoker,maybe its time to stop. As well as brushing your teeth you need to brush your tongue.
The papillae on your tongue are reacting to bacteria and are growing in an attempt to get rid of the buildup. They should be shedding normally and have gone into overdrive.
This can also happen if you have been on lots of antibiotic treatment.
Brush your tongue at least twice per day and then use a mouthwash.