Abdominal pain during pregnancy can have many causes, both pregnancy-related and non-pregnancy related. Pregnancy-related causes include round ligament pain, Braxton Hicks contractions, preterm labor, placental problems, and liver issues related to conditions like preeclampsia. Non-pregnancy related causes include issues like appendicitis, kidney infections, and digestive system problems. A thorough physical exam and testing is needed to determine the cause, and treatment depends on the underlying issue and gestational age of the fetus. The well-being of both the mother and fetus must be closely monitored.