Over the past 4 months I have noticed a lot of blood INSIDE my stool, on the tissue and also clear jelly like mucus. This happens about 5 times a week. I tend to get a slight pain in my lower abdominal area here and there. I went to the doctors recently and had some blood test done, my results came back with low Vitamin D. Does this sound right or should I be concerned? Not sure what to do??