Hi welcome to the health care magic Excess fatty diet also sometime can lead mucus in stool... It might be functional bowel problem without any specific cause Your work up done as follow.. -Physical examination -stool routine micro examination If pus cells present and fever history than antibiotic can be prescribed Eat more fruits and fiber diet Complete the course of prescribed antacid like omeprazole Avoid gastric irritants like excess tea, coffee, smoking etc... If no improvement than USG done for further work up Take care Consult physician for examination with keeping all this in mind