It is possible that the symptoms described could be caused by hemorrhoids. Hemorrhoids can cause pain during bowel movements and blood on the toilet paper. If the blood is light in color and in small amounts, there is usually no need to worry. It is important to address the constipation that often leads to hemorrhoids by using laxatives, increasing fiber intake, staying hydrated, and being physically active. If over-the-counter treatments do not provide relief, it may be necessary to consult a healthcare professional for prescription medications.