Sore Mouth!

I went to the dentist this morning at 8:15 to get a tooth looked at because I knew I had a cavity in it; it was the very last tooth on the bottom left of my mouth...a molar? And I assume the sealant was old and finally a cavity was able to form. Either way, the dentist fixed it all up but now my mouth is sore at the spot that he gave me a shot to numb my mouth...sigh, I hate the dentist. Also, because of the new sealant he put on the tooth when I bit down everything feels weird because I have been use to how the tooth was before. BAH!