hi Going through your question you are suffering from cramps in abdomen and following with you have stools but which are mainly foul smelling mucus. You had illness one month back. it would have been of help if you could provide us your place of residence, status of hygiene and your work. In my opinion infection are having a great chance. abdominal pain crampy and recurring along with desire to pass stools with foul smell mucus mainly go for infections could be anareobic infection or less likely parasitic. Other disorder like irritable bowel syndrome, and rarely colon cancer can also present like this. However I will advise you to visit infectious disease specialist to get yourself tested for above illnesses wish you luck