Well not sure if its just coincidence but my little girl has just had 8 days of runny poo. She is 6 months old & started solids a few weeks back. I waited til 5 days then went to the doc, had done all the checks to make sure she wasn't dehydrated & basically thats all the doc did, he repeated everything I'd done already, checked her temp etc & concluded that it wasn't something she'd eaten as it would have passed after 2-3 days, basically its a bug. He told me to come back in another 3-4 days if its still happening. Thankfully we are back to normal now. Should say that for 1st few days she was filling a nappy 6-7 times a day (aarrrrh glad that passed!) after that it was just a couple times a day. I think you can't do anymore then you are now, keep fluids up. Oh I did get a great tip for nappy rash, bath with 2tbls of baking powder, it really worked! Could also be teething though, think that can send things a bit watery down stairs!