Lower abdominal pain with low-grade fever and urinary difficulty despite normal tests may suggest conditions like Prostatitis or Chronic pelvic pain syndrome, and sometimes bowel issues like Irritable bowel syndrome can overlap. Since PSA and basic tests are normal, it?s less likely something serious, but your symptoms still need evaluation. Stay hydrated, avoid holding urine, manage constipation with fiber or Lactulose, and use Paracetamol for pain if needed. Please consult a urologist soon for proper examination and guidance, especially as symptoms are affecting your studies.