When DS has gastro he always has 'lasting' diarehhea. He had it for 9 days just before his 1st birthday, it was awful, and i went back to the dr twice!!! During that time he did go back to 2 sleeps or longer sleeps, but they did the skin pinch test and his nappies were 'wet enough'. We also gave him Hydrolite and a probiotic to get his tummy right again. It was a long stretch but we made it through! Numerous stool samples later and nothing nasty was found, just put down to gastro, which of course then i experienced too and it was awful!! If you are at allconcerned get her loooked at though xx