Had a stool today that caused some pain as if it cut my skin and bled a tiny bit on paper. had another stool later that was normal but hurt a lot and bled a teaspoon amount. still burns and hurts now. could this be a tear? family hx mom has crohns?

Yes, likely an anal fissure, with hemorrhoids possible as well. Stool consistency should be on the soft side to allow for healing. If worsening in time, seeing a doc, ideally your doc if established, would be best.

For constipation that precipitated this issue - You may take a fiber laxative like Metamucil and drink enough water daily so that your urine is colorless. For the long term you may try to increase your intake of fiber foods. Consult this site for fiber foods. http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/high-fiber-foods/art-20050948 Wish you good health!