I am not sure if this is what I had today at the dentists office ...

I am not sure if this is what I had today at the dentists office but many of the side effects are very similar and I am not sure if i will go back to have any work done. I went to the dentist to have two small fillings done. After the first shot I experienced a "panic" feeling. heart was racing and feeling light headed. I sat up in the chair and hung my head down when the asst. came in. She asked if I was OK and I told her that I felt very weird and uncomfortable. When he began drilling I could feel the pain still and so he gave me another dose of numbing meds. Well....after about five min my heart was pounding so hard I placed the dentists hand on my chest and he could feel my heart pounding out of my chest. He took my pulse and said it was over 140. Finally the heart racing began to subside but all day I feel like I have been put through the ringer. I couldn't drive myself home, and have been freezing ever since. My right ear is hurting and finally the numbness in my face is wearing off. I think that was the scariest day in my life. Never again!