Hello I have a 4 month old son and I am also breastfeeding. I do know of another mother that I go to church with and she is not nursing and having the same problems. I think it is just because of a loss of hormones. I did enjoy having thick hair while I was pregnant. I heard that taking hgh helps to keep the hair thick, I have yet to try it though. If my hair gets really think I am going to, its not that bad.