Blood in the stools can be due to hamemorrhoids.
If blood comes in loose stools associated with abdominal pain
,it can be due to Dysentry.
Please take antibiotic Ofloxacin
Please go to a Surgeon and get examined for Haemorrhoids.
If they are confirmed,it can be the cause for Blood in stools.It is better to go for surgery.
Wish you good health