I've had a constant pain in my stomach for 6 and a half hours, it started in the middle of my stomach and now is hurting on the lower part of my right side! It feels like someone is jabbing me with a pencil or something hard! any ideas what it could be? or is it something not so serious?

If it's even mildly intense you and has lasted this long you should probably get to the Doctor. It could be a number of causes including your appendix – you don't want that to rupture!

I hope you are on the way to ER right now…

Hi,I am male,20 years old.
Smoke less than half a pack a day.
I had problem with internal hemorhoids.
Lately i discovered that my grandpa just had surgery from colon cancer,which increseases my chances.
I have blood in stool once in a while,but as soon as i add fiber, it disappears.
I also was diagnosed with anemia.
I do not have bloating or "pencil stools",my times are regular every day.

Could i have colon cancer?

The thing to do is to have a colonoscopy. This is a very treatable form of cancer IF you catch it early, or in pre-cancerous stages. the thing is to do it as soon as you can. Delay is not good.

If you are cancer-free you will be able to stop worrying. If they do detect a problem they can catch it before it progresses too far.

I lost a friend to colo-rectal cancer because he put off treatment. I don't want anybody to go through what he did. Get it checked out.

Some forms of colon cancer are familial but your risk is very low if you only have one affected relative (send me the rest of your family history if you are concerned).
Anaemia is much more likely to be through poor nutrition than a marker of blood loss in colon cancer. I wouldn't be too worried so young. If you are particularly concerned your GP can refer you to clinical genetics clinics for genetic testing.

Why not seek your Doctors opinion, He'll know your family history and suggest what is best for you to do.

Can someone have colon cancer symptoms, but the tumor is not cancerous? is this possible? please help!

Yes, possible. if someone has colon cancer symptoms, its highly recommended to further investigate the condition using colonoscopy with biopsy. Its recommended to do a colonoscopy yearly for people above 50 years old. the size of tumor can be seen using a CT scan.

Some of the common colon cancer symptoms are,
1. Changes in your bowel habits, such as bowel movements that are either more or less frequent than normal,

2. Constipation (difficulty having a bowel movement or straining to have a bowel movement),

3. Diarrhea (loose or watery stools)

4. Intermittent (alternating) constipation and diarrhea,

5. bright red or dark red blood in your stools or black, dark colored, "tarry" stools,

6. Stools that are thinner than normal ("pencil stools") or feeling as if you cannot empty your bowels completely,

7. Abdominal (midsection) discomfort, bloating, frequent gas pains, or cramps.

Yes, it is possible. if you have seen a medical doctor but aren't comfortable with his diagnosis, please get a second opinion. the doctors expect this and are not insulted.