Am I dying? Help me?

So my bowl movements are out of control. Lately I've been pooping every three days but then I poop everyday. Its odd. After I ate grapes tonight, I went to the bathroom and took a poop. My poop is now mixed colors but mostly its light brown. So when I flushed the toilet, I saw bright red dots in it. My poop isn't long through. I've been having salads lately, lettuce, tomatoes, cheese, croutons, bacon bites with ranch. I'm scared now. My stomach won't stop making noises. Im so scared to get a endoscopy and a colonscopy if I get need one but I'm so scared to do it. I don't want them to be painful... and I heard you are awake :( I don't wanna have colon cancer! I'm only 16. When I was little, my poop used to be big and long! Its always clog the toilet. I'm scared tht I'm dying soon. it's been over a year since my problems started! When I had depression, I tried to overdose myself with prozac. And my poop is green and a mixture of colors now.
Am I dying? Help me?
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