when there is sensitivity on the roof (palate
) there may me many causes of this one of the most common cause is allergy
to some spices because of which it can happen, but if there is some reddish area in the roof which is increasing or any ulcer present there then you should contact your dentist
early, and the blood on the toothbrush is not related to that it is something need not to worry you just visit your dentist and get your teeth cleaned because when there is plaque
deposition on the tooth gums might bleed, it will be relieved after getting the teeth cleaned.