OK, I know breastfed babies have runny bowel motions, but when does it become diarrhea?

I've been treating Milo with daktarin for oral thrush, which the leaflet says can cause diarrhea, and I think it is.

His poo today was liquid, it actually almost looked like it was a runnier verions of the daktarin, except the right/mustard colour.

I am seeing a nurse tomorrow as he's suppposed to be having his 2 month immunisations - not sure whether she'll do them?

Does anyone know if there's something else that can be used to treat the thrush?

Should I stop giving him the daktarin (he has another 2 doses before I see the nurse/midwife tomorrow)