U have very likely IBS...its a life style disease...it can recur often...if u have blood in stools better to get one sigmoidoscopy done...most probably fissure might have recurred or rarely hemorrhoids might be there...consume high fibre diet,  drink lot of fluids , avoid non vegetarian and milk related products,  do some regular exercise. U can take pefibre 2tsp in the night, syp looz 15ml hs, tab sompraz L twice daily before food