My baby( second baby) is nearly 4 weeks old and is perfectly healthy,putting on perfect weight but has had diarrhoea for nearly 2 weeks.its about twice a day as you would expect regular poos but it is literally like yellow water....she also seems to have a lot of wind and a lot of stomach pain/ cramps?she has plenty of wet nappies too and is not dehydrated.been to doc and A& E.run some tests but nothing.no history of food allergies but am now lactose free.Any advise would be welcome...should I not worry if she is happy and healthy otherwise?will it pass?She is breast fed!thanks