I would think of colorectal cancer as a last resort. Chronic constipation can cause anal bleeding if rock-hard bowels are forced out of the rectum. Reports of this mention that blood is on toilet paper and blood present in the toilet bowl. There are several digestive disorders(25 in total)like Irritable Bowel Syndrome(IBS) and Ulcerative Colitis that can affect your bowels. Today, ulcers are caused by a bacterium, Helicobacter pylori, and is only killed with antibiotics. The simplish and cheapest ways to treat your chronic constipation is with probiotic bacteria and digestive enzymes. In my opinion, you need to reorient your bowels with probiotic substances that can change the stomach flora to good bacteria that monitor your gut.. Antibiotics kill both the good and bad bacteria and can lead to diarrhea. Think of your stomach flora as your home's lawn. One side of lawn is green(good bacteria), and the other side of the lawn is brown(bad bacteria).You must return your stomach flora(good bacteria)to a healthy place with daily bowel movements. This is not a sales pitch! Eight months ago, I was near chronic constipation when I discovered probiotics substances that corrected my hard bowels to soft bowels to expell from my colon. In one week, I was able to have daily bowel movements with one capsule a day. Advertised colonics can deplete your system of necessary electrolytes that regulate your heart and arrihythmia. Sodium, Potassium. and Magnesium electrolytes are necessary to maintain your health.
Product names of Theralac and Enzalase are probiotic bacteria and digestive enzymes(12). Using these products for one week can help to return to digestive tract to a normal condition. Go to www.theralac.com and www.enzalase. com, and read the advertisements. In the meantime, you may use Fleet's mineral-oil enemas and Fleet's regular enemas and a good and safe, temporary laxative, Duclolax, 5-mg.
To research your digestion system. there is a federal website that list digestive disorders from A to Z. Go to http://digestive.niddk.nih.gov, and read about digestive reasons for your constipation and more.
Good luck.
Harrald
It sounds like your primary doctor if that is who you are seeing is taking too much on, diagnosing you without appropriate testing? Did they at least give you an occult (hidden) blood stool kit? You should ask for a referral to a GI specialist. The source of the rectal bleeding is what they should want to pinpoint, whether it be a hemorrhoid, a fissure, a polyp or something else, you should be getting the proper diagnostic testing when your problem is being evaluated. It is good to get the worst (colorectal cancer) ruled out with testing if possible, even though you you don't know of any family history.
Also, ask your doctor for iron and ferritin (iron stores) testing, because with menstruation and rectal bleeding, you very probably are iron deficient, and even if you have had a normal CBC (complete blood count) recently, that does not mean you can not be iron deficient, so ask your doctor for blood iron and ferritin testing.
Welcome to the gastroenterology community! First off, it is very unlikely that you have colorectal cancer. I would recommend making an appointment with a GI doctor and getting a colonoscopy. Because this has been happening for so long you really need to get a colonoscopy. Good luck.