I have recently learned that my sister, in Australia, has this same problem. She, too, has started down the long path of doctors, specialists, colonoscopy, etc. So far all of this has excluded cancer and endometriosis but not found anything else.
However, just last week she was talking to a doctor at the hospital where Mum was operated on for bowel cancer and she asked him about her own problem. His answer sounds very logical so we would like to share it with all you women who are in the same boat.
The doctor explained that my sister no doubt has some extremely tiny hemorrhoids which normally do not bleed or give her any trouble. However, just before her menstrual period begins, the changes in hormone levels cause the veins in the colon to swell enormously. Since my sister suffers from constipation the result is bleeding from these hemorrhoids. Once her period is over, the hemorrhoids return to their normal size and the bleeding stops – until the following month.
For the past few months, to help her constipation and irritable bowel, she has been taking psyllium husks. The result is that the stools are much softer. An additional, unexpected result has been the absence of rectal bleeding during her period!
So the doctor’s explanation certainly seems to make sense. My sister asked me to share her experience hoping it may be of help to some of you.