This is my first and started noticing drops of clear stuff at 19 weeks.
With my first, I never experienced leaking until after birth. I am currently 37 weeks with our second and just realized I have started leaking very slightly.
Any day now. Or after you deliver. Or anywhere in between. There's no way to know... and there's nothing that is wrong with anywhere you may land on that spectrum.
I never leaked during pregnancy with my son but had colostrum as soon as he was born and had plenty of milk for the whole two years I breastfed him.
Kid number three..i have never had that happen..