Adolescent pregnancy (AP) is defined as the pregnancy experienced in girls between the ages of 13 and 19. AP is a global public health problem affecting patients’ physical and emotional health, educational and economic status, as well as their babies. Pregnancies occurring in adolescents who have not reached full adulthood physiologically and psychologically are considered riskier than other pregnancies. Life threatening problems such as the risk of preterm birth, low birth weight in the baby, hypertensive diseases during pregnancy, anemia, interventional birth, and psychiatric disorders of the mother and baby are more common in adolescent pregnancies. During pregnancy, approximately 2% of pregnant women are operated for non-obstetric reasons. The most common non-obstetric acute abdomen cause is acute appendicitis. It is difficult to diagnose acute appendicitis in pregnant patients compared to non-pregnant patients, as the clinical examination and laboratory findings associated with appendicitis are masked. Due to these difficulties, radiological imaging is more important in the diagnosis of acute appendicitis in pregnant patients. In our case, an acute abdomen with a non-obstetric cause in an adolescent pregnant woman (14y) is presented and difficulties in diagnosing acute abdomen during pregnancy and the importance of a multidisciplinary approach are discussed.