What Causes Frequent Passing Of Brown And Green Stool Along With Abdominal Pain?

I have been having strange bowel movements lately. It has varied from a dark yellowish brown (more recently) to a shredded looking brown with green spots. This has been going on for a few weeks now, and I ve read some disturbing things online that range from a bacterial imbalance to pancreatic cancer. I m a 19 year old male with type one diabetes, there has been no serious abdominal pain associated with the stool, normal urine color, and have not experienced any severe weight loss outside of what I normally lose during the summer. I m somewhat afraid of what it could be, but I d like to get a professional opinion before I panic in any way. I know that things like pancreatic cancer are rare for my age but the fact that it is a possibility at all is still worrisome to me.