My son has had problems with his pooing since birth we are under a hospital and waiting to be seen however, for the past 3 weeks now he keeps randomly being sick he can go days being ok then is sick and it's like curdled milk also his poo is really light yellow it's been like this for a while? Just wondering if anyone else has experienced this or has any ideas what this could be? I keep taking him back to doctors and they say because he is happy they aren't worried but I am starting to get worried now