Blood after a bowel movement is generally indicative of a hemorrhoid or fissure (small tear in the anal tissue).
It is common for people to bleed from internal or external hemorrhoids which are essentially dilated blood vessels. Also diverticulosis ( pockets in the colon), dilated veins, which are called AVMs (arterio-venous malformations) or cancer. Cancer is definitely not the most common cause of rectal bleeding but must be excluded when one has rectal bleeding in any age group. This is done by sigmoidoscopy or colonoscopy which is the passage of a flexible tube into the large bowel. Another cause would include ischemic colitis which is where you have lack of blood flow usually to the left side of the colon which has relatively decreased blood supply. Patients with a history of severe constipation are at risk for what is called solitary rectal ulcer where you can have a large ulcer in the rectum which may bleed. There may be other causes, including inflammatory conditions, such as inflammatory bowel disease which includes Crohn's disease as well as ulcerative colitis and also infectious colitis.
If you cannot see your Primary Care until Tuesday, then yes, I would say go ahead and go get yourself examined today. Sounds like you are having blood everytime you have a bowel movement, and this needs to be examined by a Physcian. Try not to get too worried about it, but just get it checked out.
Would like to also add some info about hemorrhoids..
Some things you can do to help hemorrhoids are:
Ok, sounds good. Take care of yourself!