### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Today at the doctors office I ended up having a rectal exam. I had injured my ribs, then after a bad sneezing fit when pain was worse, i had gone into the bathroom and had blood in the toilet to the point I thought I had started my period.but it had actually come from the other end. I do have a history of stomach/intestinal issues, internal hemorrhoids, and family history of colon cancer and polyps but no polyps myself. I have been having colonoscopies for years now because of the issues I have had a family history including my grandmother dying at age 32 from colon cancer. When the doctor felt inside my rectum, he said he felt a rather large, about knuckle sized, hard lump and there was some blood when we withdrew his finger. Lately I have been very bloated feeling and feel like I need to have a bm a lot of the time, but when I try I dont always have one. No diarrhea, but I fight constipation on and off, but lately not too bad. For the most part, I am a pretty healthy, 36 year old female. 56 128 pounds. He wants me to have a colonoscopy to get a better look at it and to get a possible biopsy of it. Any ideas of what it could be. A little sleepless over this tonight. Thank you!

### output:

Hi Thanks for using Chat Doctor Forum, There is nothing to be panic . Relax yourself. Do not be under stress . Now your doctor found some mass in rectal examination, so I advise you to perform Colonoscopy Examination as it says 100 percent correct diagnosis at the early stage.  Check for Hemoglobin level as you are in periods and in loss of blood by passing motion too.  Chat Doctor.  Increasing the consumption of whole grains, fruits and vegetables, and reducing the intake of red meat vitamin D intake is associated with a lower risk of colon cancer. I Hope I Provided Useful Information. Do ask Further Questions to help You get well soon. Regards