A 20-year-old male presents to the emergency department with abdominal pain that started around the umbilicus 12 hours ago and has now localized to the right lower quadrant. He also reports nausea, loss of appetite, and a low-grade fever. On examination, there is tenderness at McBurney’s point and guarding in the right iliac fossa.
What can be the Diagnosis and possible investigations that we can do ???