Pencil Thin Stools

is embararssing but im very worried and I was constipated this evening when I went it was pencil thin, not the normal color of blood, I went to the doc a month ago in British Columbia and loose stools constipation for 3 Mountains now and she did a test for the presence of blood in the stool and it was negative, but she sent to a gastrointestinal specialist and I see wendesday next, but after stool pencil late tonight im really scared, I have cancer of the colon that someone knows what this could be? BC every time I lift my eyes pencil stools entry with cancer
I also have a few sharp pains in his stomach ached when I visit, but when I do fine and IM IM 27 if that has some importance and i cannot tell u about family history in British Columbia, I do not know my father so I do not know anything abnout there and my mother does not know his father theres So a lot of medical history, I do not know

Well you know when you hold your bladder in the long term the feeling you have to pee goes. its kind of like that.your body takes care of you, even if somethings wrong. your body probably a way descinagrated what was in your stomach when you were constipated. or it could be your digestive system working over time I've had similar experiences. but I have a bit whatsoever and nothing serious happened.