Rectal bleeding (hematochezia) is common in pregnancy, often due to benign causes like hemorrhoids, but serious etiologies can threaten maternal and fetal health. We report a 34-year-old G1P0 woman at 25w0d, admitted for symptomatic anemia after recurrent, large-volume hematochezia requiring multiple transfusions. Initial colonoscopy revealed blood clots without active bleeding, but a repeat procedure identified a bleeding 15mm sessile tubular adenoma in the colon. The patient underwent resection of the polyp and clip placement to control and prevent future episodes of hematochezia allowing her to continue without any further complications in her pregnancy. This case underscores the need to consider neoplastic causes in pregnant patients with persistent hematochezia, despite the rarity of such findings.