history:  I have to go to the dentist really soon. One of my teeth are very sensitive lately. I don't want to go. I have to go to the dentist really soon. One of my teeth are really sensitive lately. It is definitely good to get that looked at right away. Then they can take care of it!
current: Yes, that is true. I am one of those people who hate the dentist.
next: Oh I know it's hard. Just try to relax and it will go quick. 