The empirical and clinical study of the relationship between emotions and pain has a long history. In the current study, participants rated pain intensity and worry about pain during noxious stimulation before and after they were asked to recall past events associated with worry, happiness, or pain. Participants in the worry condition evidenced increases in both pain intensity and worry about pain, and those in the happiness condition evidenced decreases in pain intensity and worry about pain, in response to the noxious stimulation. Asking participants to recall a physically painful episode had no significant effect on either pain intensity or pain-related worry. The effects of the emotion manipulation on pain were eliminated when the changes in worry about pain were controlled. The results are discussed in reference to the two-factor theory of pain and how the findings could inform clinical decisions.