When a friend of mine had her period, while thinking she was  
pregnant.
when a friend of mine had her period while thinking she was  pregnant
[INST] In this task, you will be performing a classification exercise aimed at identifying the underlying emotion conveyed by a given sentence. The emotions to consider are as follows: Anger, Joy, Sadness, Guilt, Shame, Fear, or Disgust Sentence: When a friend of mine had her period, while thinking she was  
pregnant. [/INST] joy