Thank you very much for contacting healthcare magic. You have problem of loose stool than after some day you feel constipation problem. In irritable bowel syndrom constipation relived by diarrhea or loose stool. Stool consistency is change and frequency also. More mucus secreation in stool . Abdominal ultrasound sonography is normal in irritable bowel syndrom. Endoscopy can done for further diagnosis. Intestinal problems like celiac disease cause abdominal cramps and loose stool. Stool examination test is helpful for diagnosis. Abdominal ultrasound sonography is helpful for diagnosis. Abdominal x ray can done if needed. Consent a gastroenterologist for further diagnosis. I hope my guidance is helpful to you. Thanks.