just a thought. probably have no energy because you are dehydrated from the increased loss of fluid even tho you are drinking it may very well not be enough. the blood may be caused from the increased amount of defecation causing irritation in the bowel. the first thing that comes to my mind is cholecystitis (gallbladder inflammation and/or stones). i have been an rn for over 20 years and have had this condition myself and it was necessary to have my gall bladder removed. the symptoms that you describe is exactly what i experienced to a "t". a total gall bladder work up was suggested on my behalf and surgery was required. a visit to your physician is must assuredly suggested and questions related to the gall bladder and even the pancreas should be explored.
i have stomach crampts and extremely bad diarrhea anything i eat or drink comes straight back out. my stool is not even slightly solid and i have found some blood in my stool. this started without any provocation last week and has continued. it gets worse when i sit or stand. i only feel semi=normal when i am laying down unmoving. i have also been sleeping an insane amount. i have not vomited and have been drinking water and eating toast only. i don't know how there is anything left in my system.