I had the same thing starting at 17 weeks i freaked out to i rang a health number lol but they said its nothing bad and its very good that we have produced this early it just means if you have the baby very prem then you can breast feed they also told me we can produce it quicker. so all good news
It's not milk, I think its called colostrum...or something close to that. Leaking a little it normal. And for some woman the leaking never quite stops after u have ur baby. I am 19 weeks pregnant with my 2nd, but never stopped leaking from my 1st (who is 27 months). N just in case ur wondering it doesn't squirt out, but will leak occasionally, especially when pressure is but on them. (Sry if tmi).
No its not milk yet its the beginning stages of milk lol not sure what's the correct term for it honestly when I first saw it I was freaking out I didn't know I was pregnant and it was my first child but you will get a little of leaking of that stuff if u don't want in on ur bra you can buy breast pads congratulations