When did you notice that your colostrum had come? Did you leak? Is there a relation between getting colostrum and being able to BF?

Sorry so many questions! I have been googling it, but can't really find the answers, and what better place then here to ask?!

I can't remember much about it with DS, since that was 4 yrs ago. And I am still very worried about being able to BF DD when she arrives