I am 11 weeks pregnant and already have breast milk... is that normal

!?! I am realy clueless when it comes to this subject, I couldn't find anything on it. With my first pregnancy it didn't come till after the birth. Not sure what is normal. I've heard that you can use nipple stimulation(assuming it provokes the milk to come) to bring on labor because it releases a hormone that causes contractions, could this be a problem? Can anyone shed some light?