I have a 3 week old baby who is exclusively breast fed.
He has lots of wet and dirty nappies each day - in fact his wet nappies are always really heavy. His stools have always been yellowy, light brown as I'd expect. However, DH just changed the nappy and his poo was green! I did a quick google search and everything was saying that it's a sign something is wrong

The only difference there has been in DS's feeding is that over the last few days he's really been cluster feeding of being at the breast for up to an hour as opposed to his usual 20 minutes.
Can anyone offer any reassurance??