Allergic Reaction to Local Anesthetic

I have been to the dentist twice in the last 30 days for fillings. The first time I received 2 local anesthetics and had an allergic reaction presented in cold-like symptoms and a rash. The cold-like symptoms only lasted 2 days. I went back to the dentist Wednesday (9/8) and was given 3 shots of local anesthetic. My cold-like symptoms began that night and progressed until yesterday. (4 days) I am still having coughing fits (which I didn't have before) and am experiencing extreme fatigue. I just took a 2 hour nap, but still feel as if I could sleep the rest of the week. Last night I became very dizzy, had a severe headache and hot and cold flashes. I should also note that I have a molar I'm awaiting to be removed. Part of it is broken off, bordering on being an abscess tooth and it's possible this is causing some of the symptoms.  I also don't want this same reaction when I go to the dentists office. Another important thing to note is when I was 7 I had my tonsils removed. I woke up during surgery so they had to give me more anesthetic. Afterwards I experienced breathing difficulties etc. and had to be hospitalized.

Are these reactions fairly normal and is it just something I have to deal with the next time I go?