I went to the dentist today and needed a crown. He injected me to numb before starting and everything was going fine. Then he injected me again and I felt a rush through both nares and told him what I felt. He just said wow. I felt that I had to sneeze and then the sneezing began and my right nare started running. 8 hrs later I can feel the itching inside my nose when I breath in and clear fluid running from my nose. Well this go away?