Janet.... In my experence I know women who swear they never lost their milk through the whole pregnancy untill the birth of the next child at wich time they started to produce colostrum. I myself nursed all during my 2nd pregnancy and I started to decrease around 12 weeks and lost it compleatly by week 21. I was "empty" for about a week and then switched over to colostrum. Lucky for my daughter she didnt mind the switch at all. ]