I was eating ice cream and a blood blister apered on the inside of my mouth and the whole left side of my face is numb?

Numb face. If 1/2 your face continues to be numb, or weak, paralyzed, you may have a "bell's palsey". Your dr my help ameliorate this problem..
Blood Blister Mouth. A blood blister could be due to recently biting the surface or could be a canker sore. The numb face is harder to figure out. If the numbness does not go away completely, go see your doctor. There are many causes that need urgent evaluation.