Is leaking milk normal before birth?

I am 33 weeks and 4 days today and recently I've been wetting my blouse. I've had a couple of occasions of leaking back to my 6th month but it would always be a tiny drop or I would feel my nipple moist. Eventually the milking increase from a patch of the size of a penny to its current size of a tangerine.

Point here ladies is that it is my first pregnancy and I want to know if it has happened to you all on your first pregnancy.

This happens to me at random. It's happen to me when I am aroused -which I understand. But when I am simply watching t.v or doing my makeup, thats a bit weird.