Slightly Watery Stool

Hi mummies, I’m a first time mum, and I noticed my son’s stool is not the usual stool he has daily basis. Previously he had greenish strand of mucus in his stool which i have already consulted doctor @ KKH. Said that its normal. Today my boy had mild fever, and started to have these type of stool. Is it diarrhea? He poops about 2 times today. Both had the same consistency. Pasty and watery. My son is BM & Formula Fed. Pls advise. Thank you 🥺🥺