I'm actually posting this thread on behave of my sis who hasn't yet discovered the delights of mumsnet. Sis is expecting her first baby in December and at 22 weeks her breasts have started leaking, not lots but enough to mark through clothing. I really can't remember having this problem during pregnancy, is it something she should be concerned about. Next Midwife app in 3 weeks and we can't find any related subjects anywhere!