Sentence 1: Louisa had been I'll ever since returning from her honeymoon in Asia. 
 Sentence 3: She was unsure what exotic tropical disease she might've contracted 
 Sentence 4:  Then her doctor called to set her mind at ease 
 Sentence 5:  Louisa wasn't ill after all - she was expecting a baby! 
 Given Sentence 2: She feared the constant vomiting and fatigue meant she was very sick.