Do you know when your colostrum comes in?

Jennybake12

I've read it will come in anytime after 20 weeks, but not sure if I will know it or not. I haven't had any leaking

 This is TMI, but my nipple has been having what appears to be dead cells on the very tip. They are white in color instead of pink and come right off with a tweezer. Its a little painful after I plucked it out so thought maybe I over plucked. I have read that this could be colostrum but the consistency of it feels and looks like dead tissue not something that is a dried liquid. My breasts are much "denser" and my nipples bigger and darker also.

I ask because I have had breast surgury and I really really want to beable to breast feed and would like to do everything in my power to make that possible. I read that when the baby comes, you just put the baby up to your breast they will start nursing the colostrum will just come out then?? Seems weird to me if you haven't had any leakage at all...