baby help

hi my 3 month old baby only has one bowel movement every 3 days its always watery and dark green in colour this is happening since he was born what could be the problem he also passes a lot of gas which is really smelly

[Dr. Kokil Mathur]

Hi!
A viral infection can change the stool color to dark bottle green color. If this is not the cause, then the stool is passing out of the large intestine at a very rapid rate so the bile does not break down. This can happen if you have malabsoroption syndromes. Another reason is diabetes.  It can also be due to milk intolerance. If the green stool persists do discuss this with your baby's doctor and get his stool examined. Take care!