Does anyone have diarrhea? We've had it for almost two weeks now. It a…

Does anyone have diarrhea? We've had it for almost two weeks now. It all started with antibiotics. We took antibiotics with lincomycin for 5 days. It didn't help. Then we went to a pediatrician and they prescribed enterosorbents. And this doesn't help either. Now we're taking Bifidumb liquid too, but it doesn't help either. We don't know what to do anymore. It's heartbreaking to see our child like this. Nothing helps. What helped you with diarrhea, please advise ??