Final answer:
The woman is most likely experiencing peritonitis, which is inflammation of the peritoneum. It could be caused by infections associated with conditions such as appendicitis, colonic diverticulitis, and pelvic inflammatory disease (PID).
Step-by-step explanation:
Based on the symptoms described, the condition that the woman is most likely experiencing is peritonitis. Peritonitis is the inflammation of the peritoneum, which can be caused by bacterial infections associated with conditions such as appendicitis, colonic diverticulitis, and pelvic inflammatory disease (PID). In this case, the woman's recent history of pelvic inflammatory disease makes peritonitis a likely diagnosis.