Do i have bowel cancer?

I got to the doctor and my sonograghy is 2 weeks later. So i just wanted to ask doctors here maby i can clear my head a little. I removed My apandis 3 years ago, i had slight pain like every month for the last 3 years in that area, im addicted to methadone and i can poop once in 2 weeks so my bowels is always full so i guessed its because of that. But in the last month, i couldnt stay straight from the stinging pain in that area, right below where my apandis was stings and hurts like hell, i avoided it for 2 weeks i told myself maby it goes away, but then i saw blood in my poop, it was bright red blood dragged along my poop and that was it, there was no blood on toilet paper or dripping in toilet, just small amounts of it on my stool, then after a day my stool became yellow, do i have cancer? Or what is it? Any doctors here that can help me somehow please? For head up, im eating karchak oil so i can poop regularly so the sonograghy does not get interupted, is it bad for me? Oh im eating Scopolamine for the sharp pain too, is it bad?

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