Lydia is experiencing severe stomach pains. Last week, she found blood in her urine. She feels fatigue, and is increasingly unable to carry on with her daily routine. She has been researching about her symptoms on the Internet, and most of her symptoms indicate that she may be at an early stage of developing a cancerous tumor. She concluded that she requires treatment but has not visited a doctor yet. Which of the following delay behaviors is Lydia displaying?
a) Expedited medical response
b) Patient self-diagnosis
c) Proactive healthcare management
d) Immediate medical attention
