What are some reasons for a bleeding hemorrhoid when you have loose stools and how do you get the bleeding to stop.?

Just hemorrhoids ? Are you sure you have just hemorrhoids? Bleeding from the rectum that recurs may also indicate anal fissures, proctitis (due to infection, inflammatory bowel disease, radiation therapy, stercoral ulcers, rectal prolapse, trauma, etc.) or a bleeding source further upstream. Depending on your age, risk factors, current medication (aspirin, nsaid's, anticoagulants can cause bleeding), get evaluated.
Several options. First, not always best to assume blood is coming from hemorrhoid. Should get checked. If is a hemorrhoid bleeding can often times be stopped with medical treatment like suppositories or local office procedure like rubber band ligation or injection schlerotherapy.