Hello. My 16 week old baby girl has had a few short black hairs in her stools occasionally. The stools are also a bit mucousy, and sometimes a little bit frothy. She passes wind fine. She passes stools usually about once a day on average. She is fully breastfed. Where are the hairs coming from?? I saw something online that they could be amino acid chains?!? Also, my husband has a hairy chest with very dark hairs. Could it be coming from there, and if so, could it harm her? Thankyou.