No, this is not normal at all. Blood can indicate either a shell has broken inside her and is perforating the oviduct or it could be coccidiosis.
Time to start on Corid on the chance this is the latter. Also, blood is a sign of conditions conducive to bacteria infection. Time to start her on an antibiotic, as well. What do you have on hand?
When you mix the Corid water, also give her a straight drench dose of Corid by syringe at .1ml per pound of her weight. Do it once a day for three days.
Can you post a pic of this bloody poop? Any sign of blood on her butt feathers? How is her behavior?