Final answer:
The symptoms and clinical signs present in the 19-year-old patient suggest a possible diagnosis of pelvic inflammatory disease, despite the negative lab results. Further diagnostic steps should be taken to confirm this and initiate treatment.
Step-by-step explanation:
The subject question is related to a possible diagnosis for a 19-year-old patient on oral contraceptive pills, who is experiencing lower abdominal cramping after a menstrual period and has symptoms including yellow-tinged vaginal discharge without odor or pruritus, febrile state, and cervical motion tenderness.
The negative lab results may eliminate certain possibilities, but the clinical presentation suggests a possible pelvic inflammatory disease (PID), especially considering the cervical discharge and tenderness. It is important for the healthcare provider to perform further examinations and possibly imaging studies to confirm the diagnosis and start appropriate treatment.