Hi everyone. I'm 15 yrs old (I know I'm still young to be worrying about my health like this) and I just saw a verrryy small streak of bright red blood (or I thought it was blood) in my stool. I also just had some tomatoes, but that was just an hour or so ago. Could this just be some sort of thing from the tomato, or is it serious? Pleasseeee....I'm really worried.