I was bathing and noticed when I washed that I was losing a skin tissue like substance out of my vagina. I felt inside and sure enough there were pieces of skin looking stuff sitting in the enterence of my cervix.. it is stating to come out. Doesn't look like the mucus plug that I have seen in my past pregnancies. I have never seen this before. Was also seen last week for possible preterm labor. This is my 4th baby back to back.