DS2 has had an upset tummy for 2.5 weeks. He was sick several times in the early days, but now it's just diarrhoea. Even that varies in consistency, from almost normal to horrible mucus-y slop, sometimes in the same day.
I took him to the doctor last week, who said that as he's well hydrated, not losing weight, sleeping normally and still eating/feeding like a trooper then there was nothing that needed to be done. DS2 still seems absolutely normal in himself, it's just the diarrhoea.
Any ideas what it could be? And should I do anything?
TIA.