Colon Cancer Or Just Hemorrhoids?

I am 25 years old and turn 26 in January. I am 179cm tall and weight around 65. I am wondering if my symptoms are Colon Cancer or is just a long therm Hemorrhoids. I got symptoms for Hemorrhoids when I was at early 19. Which was itching and not be able to sit still, small clumps which is symptoms for External Hemorrhoids. My doctor asked me to take a look at my anus at that time, but I am very shy and don't like others to peek at my private locations on my body so I told him not to. There was extremely little amount of blood(almost none) on the toilet papers. Sometimes there was blood and sometimes none, but the itching and irritation was always there and the pain around the anus.

I got Scheriproct suppositories and ointment which I used few times, but after one bowel movement when everything looks fine I usually quit using them and then after few weeks or months the symptoms returned. Itching and irritation, blood on stool following up. It got worse over the years and I never thought so much about it as I started to get used to it..

The blood was always fresh red and I was always in pain around anus after a bowel movement. Few times I lost so much blood that I got fever and ended up in bed. The last time I got fever, I decided to not just let it pass again so I started to search online for information and then came across about Colon Cancer and its symptoms.. I am still a person who is very shy and don't like others to take a look at my private locations on my body unless it is my girlfriend. I don't always get fever, happened few times, but there were still blood on my stools.. Dripping down and kinda like blood smeared on the poop and not mixed within the poop.

I still had prescription for two packs of Scheriproct suppositories and ointment, so I decided to use it again and see if it ceases the itching, bleeding and the irritation, and if the External Hemorrhoids vanished. I used them all and every symptoms were gone. And now after 6 weeks, less or more maybe. I got the symptoms again. This time with blood again, irritation and itching, but not so much as it used to.

I want to point out that I am not so active anymore, I used to play for a football team and was a very active person til age 19. At age 19 everything changed. I quit being active and got lazy after going into a relationship, started to drink alcohol at that age and started to party alot and drink a lot of alcohol at the parties.

Before I was symptom free my diet was terrible, I used to workout 3 to 4 times a week (3 years ago), it was very on and off with the workouts so I still had symptoms then, like itching, irritation and bleeding(fresh red blood). My stool used to always be hard and I went to the toilet few times a week (2/3 times a week). I also used to sit on the toilet for over a long time(which is not good at all because of the pressure it puts around the muscles of my anus). I used to work as a checkout employee on a supermarket where I sat for almost 8 hours.

Right before I got the symptoms again after I was done with Scheriproct, I had bowel movement almost everyday and my stool used to be soft. No pain or itching, no irritation and external hemorrhoids. No blood at all and the time I used on the toilet was reduced extreamly to finish my bowel movement in maximum 5 minutes (usually 2 to 3 minutes). Then the day came when I had not a bowel movement for 3 or 4 days after eating alot of Pizza and meat I went in to the toilet and pressed a little to get some poop out because I was afraid of having hard stool again, but after that day the symptoms returned.

Here is a list of the symptoms I got, symtoms I had and symptoms which I never had.

Symptoms I have(+) had(-), never had(x)

+ Itching (not so often as before)
+ Irritation (not so much as before)
+ Blood on toilet paper and poop (fresh red)
+ Sweet, but an awful scent from poop (Don't know the reason, maybe because of the blood coming in contact with the poop)
+ Clumps on anus (External Hemorrhoids)

(+/-) Hard Stool, not so hard as it used to be and sometimes not hard at all and normal(feels great).. Last bowel movement = Hard to begin with then got softer.

- Used to bleed a lot and get fever

x NO Black Poop
x NO Weight loss
x NO pain in the abdomen
(I can't think of any other symptoms at the moment that I had or never had, sorry)

I have recently changed my diet and started to workout properly(second session today). I eat more vegetable food and drink a lot of hot drinks and water. I also eat fruit and the result was my stool was still a little bit hard to begin with, did not struggle getting it out and there was blood again(not much, but with that sweet and awful scent), but it has only been 2 days since the other bowel movement when the symptoms returned so maybe it has not healed up yet and that my diet has not taken effect yet, after all I ate many non fiber rich food these last days before changing my diet!

I am truly sorry for an extremely long post, just wanted to lay out all of the details.

By the way I have a question: If I have Colon Cancer, would I always have blood on my stool when I first have it or will it cease to bleed sometimes? As I mentioned, I was symptom free with no blood after using Scheriproct suppositories and ointment and was symptom free 3 more weeks without Scheriproct.

I am planning on visiting my doctor and let him take a look. I even took pictures of my anus as it is now to show him incase I chicken out to show him.