Apologies for tmi topic. DS is 7 weeks old, ebf and has always been a frequent pooer but it doesn't seem to be settling down and some of his dirty nappies are getting truly massive. In the past 12 hours he has had 7 of them, all but one being large and filling most of the back half of the nappy. He is well otherwise. They are always bright yellow to mustard in colour and very loose. He is gaining weight fine, following 50th centile for the past 4 weeks. Is this normal?