Sentence 1: Jane was pregnant and riding on the bus. 
 Sentence 3: She didn't want anyone to know, so she threw up in her purse 
 Sentence 4:  Later, at home, she went to clean the purse 
 Sentence 5:  There, she realized that she had thrown up on her ipod, breaking it 
 Option 1: Suddenly, she went into labor. 
 Option 2: Suddenly, she began to feel sick.