Nipples!!

Latasha • R.M.N 08/18/2019 🌈👸👣🍼💖 Z.A.M 02/ 23 / 2023 👸👣🍼💖

I'm 34 wks pregnant this is my first baby. I noticed that I haven't been leaking milk yet so I asked my friend and she told me to try squeezing my nipple so I did and I noticed that I get this white stuff like if your popping a black head it's not watery it's more of a thick substance just like a black head. What does that mean? Is that normal? I read online that it would come out yellow and like watery this isn't. Should I be worried?