My LO is 6 weeks, she has always had pretty runny poo but that last 2 weeks it is like yellow/brown water. She will have some poops imbetween that are a little mucousy. She only poops about 2-3 times every evening so i dont think it actually diarrhea. She is happy and gaining good. Not gassy. I do not feel like i have oversupply, it feels like she is emptying my breast. Any ideas on what could be causing this?