I was diagnosed with gastric cancer in my 30s. I've had a history of bloody stool. They were completely unrelated. Hemorrhoids are way more likely. Cancer at your age is unlikely, though, as I can attest as a cancer survivor, getting it checked out is the right thing to do. You'll feel a lot better when they are able to tell you exactly what is causing this and how to prevent it. Try not to sweat it too much and stop Googling it! The Internet will tell you everything is a symptom of terminal cancer!