Don't expect the toothpaste to do more than cleaning the teeth... What they show in advertisement never happens...
You are feeling pain because you may have tooth sensitivity.
You can use homoeopathic toothpaste heclalava by wheezal.
MDS - Orthodontics, LASERS, BOTOX AND DERMAL FILLERS, USA, RGDC Bangalore
Dear lybrate-user it may be that the enamel or the outer layer of your teeth has been worn out. It can be due to wrong positioning of teeth or any habbit. It can be very well treated. please fix an appointment to know more.