I haven't started like leaking but it comes out if I squeeze. Sounds werid but I never now like what week your milk actually comes in so I've always checked. Lol
If you face the shower head in the shower it can start lactation early especially if you are person like me that loves a hot shower.
I leaked really bad from week 17 with my first baby. But not bad at all with this 1, just the odd spot now and again. It's all normal :)