I have been getting pain when passing stools, there is no blood on the toilet paper or on the stools, just pain when passing them, what is it?

Sure, but...: ...Need diagnosis first. "cure" depends on if simply just hemorrhoids/fissure or something serious. Have you been straining at stool, have rectal dysfunction, perform an activity that increases pelvic engorgement with blood or increases pelvic pressure (heavy lifting, prolonged sitting, etc.)? History of colitis, infection, rectal/anal trauma or high risk? Best to get checked--don't delay please.