What causes bleeding tongue each and everytime i brush.theres a sore on my tongue now.please help!

Get checked soon: You should not have a bleeding sore on your tongue. While it could be as simple as you having bit the tongue or a canker sore, there are some more serious conditions that would be better treated sooner than later. In the past we used to worry about tongue cancer in older male drinkers/smokers, there is a hpv-related type that also affects otherwise young healthy people. Good luck.

Need to see dentist: This is not a normal situation. I can't tell you exactly what the problem is, but this is something you need to get checked. See a dentist or oral surgeon as soon as you can.