Thank you for your question on ehealthforum.com
Gassy bowel movements can happen in many conditions like gastrointestinal infections, parasitic infestations, various other intestinal conditions like IBS, celiac disease etc.
Naturally, your condition requires examination by a physician who may want to refer you to gastroenterologist if required. Stool examination for routine tests and also fatty acids, pancreatic enzymes will help in identifying the cause. Thank you.