I Went To Dentist Yesterday To Have An Old Filling

I went to dentist yesterday to have an old filling replaced. During the process I could fill the dentist cleaning the old filling out at a certain point so he gave me another numbing shot(3rd at this point)after a few minutes he came back to finish and I could still feel the tooth, so another shot (4th) and a few minutes later my whole head is feeling heavy, I'm shaking, sweating, and nervous. He tries again with me still being able to feel it so it was then he stopped and put a temporary filling in till I decide to do a root canal or not. Since this incident yesterday, I have had a severe headache and my jaw up past my ear is hurting. What is the issue?