Hello I really appreciate your concern and I will try to help you out in best possible way Rectal bleeding can be related to chronic constipation leading passage of hard stool, fissure or fistula in anus or hemorrhoids another possibility is rectal polyp or liver disease. I would like further information to help you better like relevant medical history like diabetes or liver disease do you feel itching around anus? have you taken any medicines or adulterated food Since how long you have this problem? you are pregnant for how many weeks (duration of gestation) meanwhile try to avoid constipation by taking liquid paraffin like stool softeners Have dietary fiber to increase bulk of the stool. have lots of fresh fruits and steamed vegetables Avoid smoking and alcohol it could be dangerous for you Wash your hands with antiseptic soap or solution to maintain good hygiene Avoid fatty fried junk and cold food since I can t physically examine which gives more clue to diagnose you more accurately So, In my opinion you should consult a gastroenterologist for per rectal examination and colonoscopy if need be. Hope this answers your question Wish you good health