My son is 6 weeks old. Recently he's been having diarrhea for the past two days often and on. I breastfeed. We went to the doctors and one of the nurses said to give him soy formula til it stops then his doctor said not to give him it, just keep nursing him since it's the best thing for him. Idk what to do..is it normal for him to have it? What should I do? I hope it's not my milk