This report describes the conservative management of a case of cervico-isthmic pregnancy. Options of conservative treatment aimed at preserving fertility in patients with a diagnosis of cervical pregnancy have been described in the literature. While systemic administration of methotrexate represents a conservative and less invasive alternative for hemodynamically stable patients, the case reported here describes the successful conservative treatment of a cervical pregnancy using multiple doses of systemic methotrexate together with the cervical placement of a Foley catheter and inflation of the catheter balloon to staunch the profuse bleeding that occurred as the condition progressed. In patients with a cervical pregnancy, methotrexate is well tolerated, with a minimum of side effects and a high probability that fertility can be preserved.