My 6 month old has had diarrhea for nearly 48 hours now. It's yellow, runny and smells really bad so I took her to the doctors yesterday and he checked her stomach and heart but that was it even though I said my family had been ill with stomach bugs and he said it was teethin. She's still weeing, eating, drinking and acting as normal but I'm an overthinker. Should I take her back to the doctors or is it just teething and I'm thinking too much into it? Thanks for any advice.