Hi I m losing very large amounts of mucus from my rectum which tiny bits of blood in before passing a stool. I ve got abdominal pain, nausea and general feeling of being unwell. It s been going for four days now. My bowel movements are formed and regular. I am usually constipated. Recently been on 3 lots of strong antibiotics and then nystatin for oral thrush! Any ideas what s wrong with me? I also did a home test for detecting blood in stool which is positive. I also have antiphospholipid syndrome so inject clexane daily. Gave birth 6 weeks ago.