Introduction: Often due to benign conditions such as cervical ectopy, post-coital bleeding is a distressing symptom for the patient. However, for the clinician, the identification of the etiology is important in order to effect proper treatment. Case report: We present a case referred to the colposcopy clinic because of post-coital bleeding and a smear report of ‘groups of benign glandular cells of endometrial origin’. Colposcopy was normal but histology of an excised haemorrhagic nodule revealed endometriosis with resolution of symptoms. Conclusion: Cervical endometriosis should be considered in the differential diagnosis of post-coital bleeding with no obvious ectopy or malignancy.