Ectopic pregnancy can be accompanied by symptoms of internal bleeding, with blood accumulating in the pelvic cavity over time, compressing the rectum and irritating the dentate area, leading to the development of anal cramping. A variety of problems such as rectal prolapse and perianal abscess can also cause anal cramping, and ectopic pregnancy can be confirmed by colour Doppler ultrasound, for example. If the anal swelling does not disappear with the ectopic pregnancy procedure, further investigations are recommended to rule out anal problems.