Thanks for the query to H.C.M. Forum.
( wind ) there present along blood in stool
( with ) loose in consistency all symptoms may be due to intestinal problems , nothing to prostate.
May be due to indigestion
Possibility may be of amoebic colitis ( watery diarrhea after wind passing).
May be due to hemorrhoids .
First of all consult a physician and get his opinion as physical examination may find out the reason. Colonoscopy
is the last option for diagnosis.