I've been doing it since about week 15-20 somewhere in there I don't remember exactly when but it got to the point where it would soak my shirt ..... I'm a ftm and I think it's normal
I started leaking somewhere before 20 weeks. In now 30 weeks and I leak a lot more!!!
I've been producing colostrum since the beginning of the pregnancy. So I guess it could be normal at any time. Everyone is different.
I started leaking as well at 22 weeks. Sometimes it's a lot but I hardly leaky now. Maybe every other day day