Is my wife paranoid? Whats wrong with her?

She is 23 and we have been married for 2 years. Shes extremely paranoid about small things. For example.... she has been freaking out and crying recently becuase shes convinced she has fatal liver damage because she took nyquil with tylenol on top of beer all weekend. Once I was literally 10 minutes late from work and she called her mom frantic and crying and hysterical and called the police station because she was convinced I was dead in a car crash. She does stuff like this over the smallest little things. Is there a medical condition?